v0.6.0 "Ahistorical"

Getting closer to 1.0! The only major feature that is missing is parsing of the History column, described in the docs.

I might do one more pre-release after that to make the output more convenient. For example, there's currently no easy way to sum up your reading amounts to find out how much you've read, because amounts are either Integers (for pages) or Strings (in "hh:mm" for time) which can't be added. So I could make a Length class that can represent either pages or time, and can be added together with any other Length. Anyway, I'll redo my site and update my CLI reading statistics app Readstat, which both use the Reading gem, and along the way I'll notice ways of making the output more convenient.