* Set default thumbnail

* Add a little guidance about creating example images

* creates placeholder.png

* Empty out features whose states have been removed instead of removing the feature object. This allows updating the buffers for features whose state has been removed, but also requires keep track of previously removed features.

* Update Changelog

* add geocoder custom render example

* language localize example

* Update marker demo to use built-in marker function

* remove proximity bias for gl-geocoder example because this is now default behavior

* update point from geocode demo to set custom marker color

* update examples to use new mapbox-gl-geocoder API options

* lint new examples

* Update examples to gl-geocoder 4.0.0 api

* Options should be added to the geocoder, not the map

* lint examples

* remove templating syntax

* lint fixes

* @katydecorah 's code review fixes

* update comment for setRTLTextPlugin

* clarify wording in example

* update one more frame after canvas source paused

Calling `canvasSource.pause()` lets us know we can stop pulling in
updates from it. Since it is possible that changes were made to the
canvas source since the last render we should pull in one more update
before stopping. This also lets you call play and pause immediately to
render just one frame:

ctx.fillRect(10, 10, 50, 50);
canvasSource.play();
canvasSource.pause();

* add test

* don't render changes made after canvasSource.pause()

* optimize

* optimize

* Fix an edge case where 0 target.id would fail to clear the feature state

* Check for number & string explicitly

* Add tests for 0 feature ID

* Fix logical check

* update docs-page-shell, update page-shell; update page meta

* Update react-page-shell.js

* remove contentType from examples page

* Update react-page-shell.js

* Update react-page-shell.js

* Update page-shell-script.js

* do not force production page shell

* remove hardcoded token from example, add unit test to look for access token in example html files

* Update page-shell-script.js

* do not force production page shell

* remove hardcoded token from example, add unit test to look for access token in example html files

* workaround for a Safari 12 bug with disappearing controls

* fix css lint

* v0.54.0

* update changelog once more

* release-liquid: (84 commits)
  v0.54.0 (take two) (#8184)
  Fix disappearing controls in Safari 12+ (#8193) (#8194)
  [docs] token refactor in docs-page-shell (#8174) (#8181)
  v0.54.0-beta.2 (#8166)
  Bugfix - removeFeatureState fails with target.id === 0 (#8150) (#8164)
  update one more frame after canvas source paused (#8130) (#8163)
  move docs dependencies to dev (#8121) (#8129)
  v0.54.0 (#8115)
  CP removeFeatureState fix (#8090)
  v0.54.0-beta.1 (#8084)
  Allow setStyle diff by default with localIdeographFontFamily on (#8081)
  Upgrade various (mostly dev) deps, downgrade GL (#8078)
  Fix default marker positioning (#8074)
  Use @mapbox/gazetteer for benchmark coordinates (#8063)
  bump react-dom to v16.3.3 to fix minor vulnerability warning
  Fix and refactor the benchmark suite (#8066)
  Add max width for popups (#7906)
  Extrusions: Do not try to triangulate non-polygon type features (#7685)
  docs fixes after the merge
  limit flow max_workers and upgrade to v0.95.1 (#8061)
  ...

…anonical (#8228)

* Prepare @mapbox/mapbox-gl-style-spec@13.7.0

* Add changelog of relevant items

* fix pathname

* Update react-page-shell.js