Rename hgvs to pyhgvs.
Bump version.
fix filenames in tests
add a change log
Merge branch 'pub-master' into rename-hgvs-pyhgvs
update hgvs script to use new package name
Merge pull request #15 from counsyl/rename-hgvs-pyhgvs

Rename hgvs module to pyhgvs