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.