Changelist:
Added git support (automatically or with -c git)
#20 Don't throw an exception, if maven execution fails
#21 added support for maven local_repo argument
#25 fixed a bug, when a single change or no changes caused error on rebuild
#18 ignored folder modifications (properties edit) in svn
#24 fixed an error, when stdout encoding is None
#22 added handling for missing maven submodule
#23 added overwriting of broken maven metadata
improved printing of levelled builds