v0.13.0

Extensive refactoring of key functionality into map-extent, map-link, map-feature, map-input custom elements.

What's Changed

• Move keyboard.js to handlers folder by @prushforth in #902
• remove setter for map-extent units attribute by @AliyanH in #908
• fix issue#633: web-map looks for viewer in condition by @yhy0217 in #905
• Add map-projectionchange event. by @prushforth in #911
• No query for hidden layer by @yhy0217 in #909
• Map link custom element implementation by @prushforth @yhy0217 @AliyanH in #916

Full Changelog: v0.12.1...v0.13.0