Change log for aern2-mp

• v 0.2.0 2021-05-17
  • switch to new simplified collect-errors, mixed-types-num 0.5.0
    • got rid of EnsureCE etc.
    • not introducing CN wrapper unless at least one parameter is already CN
  • using CDAR backend only, no MPFR for now
  • WithCurrentPrec for specifying default precision via types
• v 0.1.4 2019-03-19
  • CDAR-based Integer-only backend
    • needs the mBound branch of CDAR
  • adapts to mixed-types-num 0.3.2 (new divI, mod)
• v 0.1.3.1 2018-11-21
  • small fixes, mainly documentation
• v 0.1.3.0 2018-11-20
  • only one MPFR backend - rounded
  • reduce backend-specific code
• 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