LocalVariableLocator takes a parent statement instead of a function
replaced dyn_cast_or_null with dyn_cast in UsedVariablesFinder
replaced RecursiveASTVisitor with StmtVisitor in getStmtRange
generalized all expressions in getStmtRange
fixed a typo in getStmtLocationRangeTest
renamed CppManip.cpp to extractFunctionInFile.cpp
moved OffsetConverter and OffsetRange to cppmanip::text
changed OffsetRange tests to PositionRange tests
moved PositionRange to cppmanip::math
renamed TextOperationApplier::OffsetRange to TextOperationApplier::PositionRange
moved legacy code to cppmanip::legacy
refactored DelayedMethodExtractor