drothlis/stb-tester — pull request #208 by wmanley (2014-07-25 17:16:49+00:00)
Title: Region API consistency and helper functions

This is a series of changes inspired by @lewishaley's [perceptive comment on a previous review](https://github.com/wmanley/stb-tester/commit/604ff6182658de0bbf3d9f2256bfc57b7a508b3c#commitcomment-7133004) about the inconsistency of use of `Region` as a parameter to functions. These changes are intended to correct these inconsistencies by enhancing `Region` to handle infinities and then using the (not so) special value `Region.all` to represent the whole frame where we want to.