repo: added .mailmap

git shortlog now mirrors the names and email addresses in copying.md
Move finding python into separate CMake module.

See #40
Additionally CMake will find Python on OS X now. Fixes #16
Add OS X prerequesites section for OS X to building documentation
buildsystem: prettified the new findpython cmake module
Merge pull request #64 from svkurowski/add_osx_building_doc

Add OS X prerequesites section for OS X to building documentation
Add a screenshot manager, and let it save the screenshots with a nice name
screenshot: now the 'shot manager does the masking/copying/saving
screenshot: include the timestamp in the filename, reset counter acoordingly
fix a few issues pointed by many people:
- replace `:` in filenames with `-` (better windows non-breakage)
- put my name/email on `copying.md`
- moved `screenshot.{cpp,h}` from `util` to the root folder/namespace
- fixed a typo due to copypaste
- fixed space indents, use tabs!
screenshot: update cmakelists after moving files