Update badges and descriptions in index.html

Revise load method return type in documentation

Bump version from 1.5 to 1.6

Modify load method to support method chaining

Update dependencies listed in index.html

Enhance styles and add comparison table for PickleDB vs PickleDBSQLite

Add section explaining PickleDB vs PickleDBSQLite

Update documentation for SQLite backend details

introduce sqlite as optional backend replacement for a safer and more thread safe env

update index.html

deleted testing files unneeded

redesign docs page to be more modern and easxier to read. even added a few emojis

update index.html

fix stupidity in pyproject.toml

edit index.html to include a shameless plug for mkvDB