use correct logger
fix docstring
initial format convert classes
add unittests for format convert classes
add support for ListOfStrings, DictOfStrings and
ListOfStringsAndDictOfStrings
add more tests for format_convert
initial support for suffix in versionoperators
version with suffix unittests fixed
insert skeleton class for dependency and patches
bump vsc-base to 1.7.5
implement Dependency class
add unittest for Dependency class