Log Message:
hs-cassava: update to 0.5.3.0.

## Version 0.5.3.0

 * Improve error messages for `lookup` and NamedRecord parsers (#197)
 * Fix bug (infinite loop) in `FromField Const` instance (#185)
 * Turn flag `bytestring--LT-0_10_4` off by default (#183)
 * Doc: Add cassava usage example of reading/writing to file (#97)
 * Update to latest version of dependencies (#190, #193, #199)
 * Tested with GHC 7.4 - 9.4 (#184, #204)