Merge pull request #1 from mselig/develop

Develop > Master
Merge pull request #2 from mselig/develop

hotfix in infer_power.
Merge pull request #3 from mselig/develop

version update.
Merge pull request #4 from mselig/develop

version update.
Merge pull request #5 from mselig/develop

demo_wf added.
missing raise statements for TypeErrors
Merge pull request #6 from JohannesBuchner/master

bugfix ("raise" added before TypeError in enforce_power)
Merge branch 'master' into develop