fix(editor): Fix focus on host element

fix(editor): Add tabindex for editor element

Text area needs a tabindex kolkov#102

Closes kolkov#102

fix(doc): Fix npm readme.md for library

0.17.0

0.16.2

Bump version

0.16.0

Bump version to 0.15.4

Bump version to 0.15.3

Bump version to v0.15.2