Installation fixes: bump pysam and cyvcf requirements. Ensure gemini configuration is written even if all downloads fail to allow clean updates via 'gemini update'
Merge pull request #163 from chapmanb/master

Installation fixes: bump pysam and cyvcf versions and allow 'gemini update' even if initial installer fails on installing data
Bump version of cyvcf to fix installation issues from missing files in 0.1.6
Merge pull request #164 from chapmanb/master

Bumps cyvcf versions to include fixed installation version from pypi
Fix snpEff version detection (issue #165)

Recent SnpEff versions don't have the "SnpEff" name in the version
information anymore, which breaks loading (maj_version will become None)

This patch fixes the issue by:

- cleaning the string up (no more nested quotes)
- splitting the string
- checking if the first token includes "SnpEff"
Merge pull request #166 from cswegger/fix-snpeff-version

Fix snpEff version detection (issue #165)
Bump ipython-cluster-helper to the latest revision
Added high-impact burden summary and c-alpha test.