* use src to make stc in lcmv
* use src to make stc in dics
* storing src in filters for dics
* add src tests to lcmv
* rewrite tests to reflect changes in testing policy
* use already existing apply_lcmv for src test
* add test for dics
* update and fix docstrings
* change lcmv filters to only store src_type
* allow src_type as input to _make_stc
* adjust test for src to be test for src_type
* fix docstring
* exchange src with src_type in _make_stc
* adjust DICS to changes in _make_stc
* adjust DICS, iteration II
* pep8 fix
* adjust DICS test for filters
* adjust inverse.py to passing src_type instead of src
* fix _make_stc
* handle src_type being None
* add src_type as none if not in filter (lcmv)
* add src type as None if not in filters (dics)
* adapt tests for lcmv
* adapt dics tests
* fix docs / comments
* add flexible warning to _get_src_type
* add function for checking filters and warning message
* refactor lcmv and dics for filters and warning
* update emitted warning
* update tests lcmv
* adjust dics tests
* fix handling of dict
* fix dict handling, part II
Britta Westner
e60cc0ab0b