* fixed indentation code and added de-/activate to indentation
* added tests for indentation changes
* changed indentation code and tests
- more changes to plantuml-indent-regexs
- added more test
- changed function to determine indentation level and tests accordingly
- changed plantuml-indent-line and tests accordingly
- changed test names and doc strings to be more consistent
* more indentation tests, corrected regex for par block
- the par block usually does not have any label
- added database to start regex and added a test
- added block tests