Started implementing RegularExpressionMatch.
Backing dict is now Dictionary<T, Bool>() instead of Dictionary<T, T>().
Improved code readability by adjusting line length.
Line length tweaks.
Added support for comparing tuples of 2 or 3 items.
Added str.partition.
Merge branch 'master' of https://github.com/practicalswift/Pythonic.swift

# By practicalswift
# Via practicalswift
* 'master' of https://github.com/practicalswift/Pythonic.swift:
  Line length tweaks.
  Improved code readability by adjusting line length.
  Backing dict is now Dictionary<T, Bool>() instead of Dictionary<T, T>().
  Started implementing RegularExpressionMatch.

Conflicts:
	src/Pythonic.set.swift