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
code refactoring
add tools.convert module with base convert classes
cleanup imports
introduce intermediate RobotPath classe to deal with robot as special
option (and make the argument printable). options.robot shouldn't be
modified anymore (the commandline must be protected)