check if ProfileCollection is a class.
Merge branch 'master' of github.com:rueckstiess/mtools
added remark about requirements.txt in INSTALL.
updated current version to 1.1.4.
bumped version to 1.1.3
Merge branch 'release-1.1.2' Conflicts: README.md mtools/version.py
bumped version to 1.1.1
Update README.md Changed relative Wiki links (broken) to absolute links.
Merge branch 'release-1.0.5' Conflicts: README.md mtools/version.py