#75 integrated string to joda-time conversion
#75 got rid of hard dependency to joda library and added conversions for java.util.Date and java.util.Calendar
#75 Adapting to changed model types after rebase
#75 Adding Timo to copyright.txt; Merging ClassUtils into NativeTypes
#75 Some re-organization in Conversions etc.
#75 JavaDoc
#206 adding checks on accessibility of referenced mappers and introducing unit test for that case
#206 adding case for protected method in same package
#206 Moving canAccess() method to Type; Splitting up MethodRetrievalProcessor#getMethod()
#187 introducing constant mapping
#187 adding unit test to make sure that reverse mapping also works for source constants
#187 adapting for #198