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diff --git a/calculatorpp-main/res/layout-land/main_calculator.xml b/calculatorpp/res/layout-land/main_calculator.xml
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rename from calculatorpp-main/res/layout/calc_three_digit_button.xml
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rename from calculatorpp-main/res/layout/calc_two_digit_button.xml
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diff --git a/calculatorpp-main/res/layout/calc_vars_button.xml b/calculatorpp/res/layout/calc_vars_button.xml
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rename from calculatorpp-main/res/layout/calc_vars_button.xml
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diff --git a/calculatorpp-main/res/layout/calc_zero_digit_button.xml b/calculatorpp/res/layout/calc_zero_digit_button.xml
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rename from calculatorpp-main/res/layout/calc_zero_digit_button.xml
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diff --git a/calculatorpp-main/res/layout/display_error_message.xml b/calculatorpp/res/layout/display_error_message.xml
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rename from calculatorpp-main/res/layout/display_error_message.xml
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rename from calculatorpp-main/res/layout/donate.xml
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rename from calculatorpp-main/res/layout/feedback.xml
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rename from calculatorpp-main/res/layout/help_faq.xml
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rename from calculatorpp-main/res/layout/help_hints.xml
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rename from calculatorpp-main/res/layout/help_screens.xml
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diff --git a/calculatorpp-main/res/layout/history.xml b/calculatorpp/res/layout/history.xml
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rename from calculatorpp-main/res/layout/history.xml
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rename from calculatorpp-main/res/layout/history_activity.xml
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rename from calculatorpp-main/res/layout/history_edit.xml
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rename from calculatorpp-main/res/layout/math_entities.xml
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rename to calculatorpp/src/main/java/org/solovyev/android/calculator/help/HelpScreensActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryTabActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryTabActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryTabActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryTabActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/Editor.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/Editor.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/Editor.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/Editor.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/History.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/History.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/History.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/History.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryActivityTab.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryActivityTab.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryActivityTab.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryActivityTab.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/SavedHistoryActivityTab.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/SavedHistoryActivityTab.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/SavedHistoryActivityTab.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/SavedHistoryActivityTab.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/MathType.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/MathType.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/MathType.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/MathType.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsTabActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsTabActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsTabActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsTabActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsTabActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsTabActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsTabActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsTabActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/FunctionEditorSaver.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/FunctionEditorSaver.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/FunctionEditorSaver.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/FunctionEditorSaver.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AFunction.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AFunction.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AFunction.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AFunction.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AbstractAndroidMathRegistry.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AbstractAndroidMathRegistry.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AbstractAndroidMathRegistry.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AbstractAndroidMathRegistry.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AbstractNumberBuilder.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AbstractNumberBuilder.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AbstractNumberBuilder.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AbstractNumberBuilder.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidFunctionsMathRegistry.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidFunctionsMathRegistry.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidFunctionsMathRegistry.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidFunctionsMathRegistry.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidMathRegistry.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidMathRegistry.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidMathRegistry.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidMathRegistry.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidOperatorsMathRegistry.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidOperatorsMathRegistry.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidOperatorsMathRegistry.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidOperatorsMathRegistry.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidPostfixFunctionsRegistry.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidPostfixFunctionsRegistry.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidPostfixFunctionsRegistry.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidPostfixFunctionsRegistry.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidVarsRegistryImpl.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidVarsRegistryImpl.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/AndroidVarsRegistryImpl.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidVarsRegistryImpl.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/CalculatorEngine.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/CalculatorEngine.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/CalculatorEngine.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/CalculatorEngine.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/CalculatorEvalException.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/CalculatorEvalException.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/CalculatorEvalException.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/CalculatorEvalException.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/CalculatorParseException.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/CalculatorParseException.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/CalculatorParseException.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/CalculatorParseException.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/DummyTextProcessor.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/DummyTextProcessor.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/DummyTextProcessor.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/DummyTextProcessor.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessor.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessor.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessor.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessor.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Functions.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/Functions.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Functions.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/Functions.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/LiteNumberBuilder.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/LiteNumberBuilder.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/LiteNumberBuilder.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/LiteNumberBuilder.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/MathEntityPersistenceContainer.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/MathEntityPersistenceContainer.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/MathEntityPersistenceContainer.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/MathEntityPersistenceContainer.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/MathPersistenceEntity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/MathPersistenceEntity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/MathPersistenceEntity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/MathPersistenceEntity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Messages.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/Messages.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Messages.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/Messages.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/NumberBuilder.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/NumberBuilder.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/NumberBuilder.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/NumberBuilder.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/PreparedExpression.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/PreparedExpression.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/PreparedExpression.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/PreparedExpression.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/TextProcessor.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/TextProcessor.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/TextProcessor.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/TextProcessor.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/ToJsclTextProcessor.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/ToJsclTextProcessor.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/ToJsclTextProcessor.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/ToJsclTextProcessor.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Var.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/Var.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Var.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/Var.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/VarCategory.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/VarCategory.java
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rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/VarCategory.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/VarCategory.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Vars.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/model/Vars.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/model/Vars.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/model/Vars.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java
rename to calculatorpp/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java
diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/plot/MyXYSeries.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/plot/MyXYSeries.java
similarity index 100%
rename from calculatorpp-main/src/main/java/org/solovyev/android/calculator/plot/MyXYSeries.java
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diff --git a/calculatorpp-main/src/main/java/org/solovyev/android/calculator/plot/PlotUtils.java b/calculatorpp/src/main/java/org/solovyev/android/calculator/plot/PlotUtils.java
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rename from calculatorpp-main/src/test/java/org/solovyev/android/calculator/math/MathTypeTest.java
rename to calculatorpp/src/test/java/org/solovyev/android/calculator/math/MathTypeTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/CalculatorEngineTest.java b/calculatorpp/src/test/java/org/solovyev/android/calculator/model/CalculatorEngineTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/CalculatorEngineTest.java
rename to calculatorpp/src/test/java/org/solovyev/android/calculator/model/CalculatorEngineTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessorTest.java b/calculatorpp/src/test/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessorTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessorTest.java
rename to calculatorpp/src/test/java/org/solovyev/android/calculator/model/FromJsclSimplifyTextProcessorTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java b/calculatorpp/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java
rename to calculatorpp/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java b/calculatorpp/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java
rename to calculatorpp/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/VarTest.java b/calculatorpp/src/test/java/org/solovyev/android/calculator/model/VarTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/android/calculator/model/VarTest.java
rename to calculatorpp/src/test/java/org/solovyev/android/calculator/model/VarTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/android/calculator/plot/PlotUtilsTest.java b/calculatorpp/src/test/java/org/solovyev/android/calculator/plot/PlotUtilsTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/android/calculator/plot/PlotUtilsTest.java
rename to calculatorpp/src/test/java/org/solovyev/android/calculator/plot/PlotUtilsTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/common/FloatIntervalMapperTest.java b/calculatorpp/src/test/java/org/solovyev/common/FloatIntervalMapperTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/common/FloatIntervalMapperTest.java
rename to calculatorpp/src/test/java/org/solovyev/common/FloatIntervalMapperTest.java
diff --git a/calculatorpp-main/src/test/java/org/solovyev/common/math/DiscreteNormalizerTest.java b/calculatorpp/src/test/java/org/solovyev/common/math/DiscreteNormalizerTest.java
similarity index 100%
rename from calculatorpp-main/src/test/java/org/solovyev/common/math/DiscreteNormalizerTest.java
rename to calculatorpp/src/test/java/org/solovyev/common/math/DiscreteNormalizerTest.java
diff --git a/calculatorpp-main/src/test/resources/org/solovyev/android/calculator/model/nb_table.csv b/calculatorpp/src/test/resources/org/solovyev/android/calculator/model/nb_table.csv
similarity index 100%
rename from calculatorpp-main/src/test/resources/org/solovyev/android/calculator/model/nb_table.csv
rename to calculatorpp/src/test/resources/org/solovyev/android/calculator/model/nb_table.csv