[#52] Add StaticPicker component that doesn't use vue-virtual-scroller.

- Fix [#55] non native sets only work with all json

6.0.0:

- #53 - do not include all.json by default, remove Emoji and Picker wrappers.

Build 5.4.15

Fix #46 - server-side rendering "document is not defined".

Fix #46 - server-side rendering issue.

 Fix for #44 (Emoji component is not rendered):

 - fix emoji css
 - add back "size" property to set size for standalone Emoji
 - better way to convert string to emoji object
 - add test for emoji size

Cleanup npm published version.

Prepare publish to npm.

Fix data files path in the bundle, #42