Merge pull request #54 from frederikheld/fix/update-dependencies

Fix/update dependencies

Merge pull request #39 from frederikheld/fix/security-issues-in-depen…

…dencies

Fix/security issues in dependencies

Merge pull request #34 from frederikheld/fix/package-entrypoint

Fix/package entrypoint

Raises version to 2.3.0

Raises version to 2.2.1

Raises version to 2.2.0

Raises version to 2.1.0