create DefaultValue test
create data for NestedCall test
create data for Parentheses test
create data for Lambda test
add tests to PyCallHierarchyTest
back to default version of PyDebuggerOptionProvider
add actions to PyCallHierarchyPopupMenu
add changes in getting callers and callees based on static information
changes data for ArgumentList test
changes data for Inheritance test
changes data for OverridenMethod test
set up isSaveCallSignatures to true for env tests