JNRowe/rdial — pull request #19 by JNRowe (2014-06-04 01:54:55+00:00)
Title: Cache read CSV files

This reduces *my* personal runs by two thirds, and is reasonably robust. It's basically option 5 from #17.

Admittedly `pickle` wasn't my first choice for obvious reasons, but it is only used *after* validation on reads and it is considerably faster than manually marshalling the `datetime` objects with JSON.

Refs #17.