[Haskell-cafe] ANN: prefix-units 0.2.0

[Iustin Pop]

Hi all,

New version of my small library prefix-units (for parsing and formatting
things like "10K"). Changes:

* Incompatible API change to cleanup some initial design decisions:
  the two level `FormatOption`/`FormatMode` model is removed, the
  fixed unit of `FormatOption` is moved to a new constructor
  `FormatMode`, and `FormatOption` is removed entirely. This should be
  a simpler API, at the cost of breaking compatibility.
* Fixed issue #3 (No support for negative numbers).
* Worked around issue #1 (Add 'base' unit) by adding a mode that
  disables scaling; it should have the same effect without introducing
  an artificial unit.

Feedback welcome, either via email or at
https://github.com/iustin/prefix-units.

happy hacking,
iustin