Changelog for aern2-mp-0.1.2.0

v 0.1.2.0 2017-11-14
- fix compilation with haskell-mpfr
v 0.1.1.0 2017-11-14
- using Claude Heiland-Allen's Numeric.Rounded.Simple
v 0.1.0.1 2017-09-12
- first release on Hackage
- backends: hmpfr and (tweaked) rounded