Pre-release of Video.js 7. Removes IE<11 support. Adds VHS by default!
Has a video.js/core import for those that don't want VHS.

7.0.0-alpha.1 (2018-04-23)

Features

• built-in HLS playback support (#5057) (d1b4768)

Bug Fixes

• time-display: Use formatTime for a consistent default instead of hardcoded string (#5055) (228484b)

Chores

• test: upgrade qunit and karma-qunit to latest (#5051) (44312bc)

Code Refactoring

• move sourceset code out of tech (#5037) (1cb67ab)
• remove IE8 specific changes (#5041) (bc2da7c)

Documentation

• tech: fix misspellings (#5059) (96987f8)
• text-track: fix misspellings (#5058) (4d3331e)
• time-ranges: fix misspellings (#5046) (378d98e)

Tests

• no longer test on IE8, IE9, or IE10 (#5032) (0a20d65)
• update karma browser OS versions (#5050) (3798446)

BREAKING CHANGES

• remove IE8, IE9, and IE10 specific JavaScript and CSS code. Remove Android 2.3 workaround.