Meaningful Changes

Fix for <slot> to <content> transform that broke text distribution
- Caveats of the transform: all named slots must come before unnamed slots in the DOM. Details here: #4109 (comment)
Memory leak fix in the fire method for IE
Memory leak fix in the importHref method
Fix for stale values from getComputedStyleValue

Raw Notes

Remove dependency on WebComponets for IE detection (commit)
Make sure text nodes are distributed when translating slot to content (commit)
always use the document listener (commit)
Add tests for no-gesture interop (commit)
fix lint error (commit)
Use document-wide passive touch listener to update ghostclick blocker target (commit)
only need to recalc if styleProperties missing (commit)
simpler implementation, only recompute when using shim variables (commit)
[ci skip] update travis.yml from 2.0 (commit)
Always update style properties when calling getComputedStyleValue (commit)
Add tests (commit)
Fix #4123: Memory leak when using importHref (commit)
Prevent _showHideChildren from being called on placeholders. (commit)
fix broken link to Google JavaScript syle guide in documentation (commit)
Better explanation thanks to @kevinpschaaf (commit)
[ci skip] fix changelog title (commit)
[ci skip] Update Changelog for 1.7.0 (commit)
Resolving issue #1745 with Polymer docs (commit)
fixed broken tests/missing web components (commit)
3430 - ie memory leak fixes - disable event caching, fixed resolver url adding to root doc, and weak map ie issues (commit)
Briefly explain how to split element definition (commit)
Fix copy&pasted comment (commit)