docs: Use text from web site and readme

(cherry picked from commit 1e0569abb6e482366b6012e05604826a4df35c12)
docs: Add more links into the docs

(cherry picked from commit 5dd2be5ec94c8691eb1051e9e78c283a2e09e764)
docs: Update changelog
Bump version to 0.19.3
Release v0.19.3
Merge branch 'master' into develop

Conflicts:
	docs/changelog.rst