[v2] v2.0.0-beta.8
[website] v2.0.0-beta.7
[v2] v2.0.0-beta.5
[v2] v2.0.0-beta.4
[v2] v2.0.0-beta.3
[v2] v2.0.0-beta.2
[v2] Update README
Merge branch 'v2-alpha'