Changelog for prosidyc-0.2.0.0

# v0.2.0.0 _(2020-03-06)_ - Added a typeclass, `FromSetting`, which parses setting strings into values. - Added a `strict` combinator to check that all metadata items are expected. - Weakened constraints on `Match` and `Rule` to require `Applicative` instead of `Monad`. - Fixed `Rule` to accumulate all errors. # v0.1.0.0 _(2020-03-03)_ - Initial version