Bump deps on attoparsec and transformers.
Bump version to 1.6.3.
Merge remote-tracking branch 'JPMoresmau/master'

Conflicts:
	mangopay/mangopay.cabal
Remove whitespace.
Split `store*` into `create*` and `modify*`.

Also extracted helper functions `createGeneric` and `modifyGeneric`.
Extract helper function `fetchGeneric`.
Further abstract modifyGeneric.

To include remaining 'modify*' functions.
Extract common code from paginated list functions.
Merge pull request #17 from alanpog/splitting

 Split `store*` into `create*` and `modify*` functions.
Merge pull request #18 from alanpog/more-abstraction

More abstraction
5 seconds is enough