Tags: maxknee/polymer

[ci skip] v2.0.0-rc.6

[ci skip] v1.9.1

[ci skip] v2.0.0-rc.5

[ci skip] v1.9.0

[ci skip] v2.0.0-rc.4

[ci skip] 2.0.0-rc.3

[ci skip] release 2.0.0-rc.2

Merge pull request Polymer#4372 from Polymer/2.0-preview

Merge 2.0-preview to master