hammerlab/guacamole — pull request #150 by ryan-williams (2014-08-20 22:43:16+00:00)
Title: Make a couple of `Read` getters return `Option`s rather than throwing

A first attempt at adding type safety to some fields we have laying around that threaten to throw exceptions unnecessarily.

In this case: `isMapped`/`getMappedRead` and `getSequencedSingleBase`