Changes since 0.4.3 (2015-12-06).
- fixes #282: preserve position in "identity" variants (e.g., norm(c.123A>A) => c.123= rather than c.=) [BROKEN: 5e6fd1524204]. (Reported by Stephan Pabinger.)
- fixes #294: extend variant type checks in validator [BROKEN: e28b5a525f6e]
- fixes #292: Fix bug in validator when validating m. variants and add tests [BROKEN: 64e31808a760]
- stopgap for #253: issue warning that p. validation is unsupported [BROKEN: a9bd9ab405bc] (Reported by Ram Srinivasan.)