Removed foldl, implemented reduce for partitioned list, added memoization
Merge remote-tracking branch 'upstream/master'
Introduced Keys into DoubleModListNodes
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Fixed last reduction bugs
Adjusted Examples for Key type
Formatting, long lines
Merge remote-tracking branch 'upstream/master'

Conflicts:
	examples/src/main/scala/tbd/list/SimpleMap.scala
Merge pull request #12 from emiswelt/master

Key property