0.22.2 (2014/4/16)

- display years before 1000 with four digits, not three
- avoid pretty-show to build with GHC < 7.4
- allow text 1.1, drop data-pprint to build with GHC 7.8.x

0.22.1 (2014/1/6) and older: see http://hledger.org/release-notes or doc/CHANGES.md.
