v0.5.0

• Coverage track now shows frequency of variants
• Pileup tracks include a dotted center line to orient the viewer
• pileup.min.js shrinks from 588693 → 379914 (204kb = 35% smaller)
• Comes with source maps for pileup.js and pileup.min.js
• Updated to React 0.14 and dropped the data-pileupid hack
• Misc performance improvements
• Failed network request messages include the URL
• Bugfix: off-screen gene names are now hidden
• Bugfix: zooming in and out won't change the center base pair
• Bugfix: alignment mismatches are centered
• Bugfix: the reference track no longer needs to be the first
• Bugfix: clicking on mismatches shows read info popup