Version 3.4.0

What's Changed

• Parameterizable Spooq Mapping Transformations by @Breaka84 in #39
• Bump werkzeug from 2.0.1 to 2.2.3 by @dependabot in #45
• Bump pyspark from 3.0.1 to 3.2.2 in /docs/source by @dependabot in #41
• Bump pyspark from 3.0.1 to 3.2.2 by @dependabot in #42
• Bump future from 0.18.2 to 0.18.3 by @dependabot in #46
• Fix Tests on Github Actions by @Selbstsesslingen in #53
• Fix readthedocs by @Breaka84 in #54
• Fix release action by @Breaka84 in #55
• Fix read-the-docs & update readme by @Selbstsesslingen in #56
• remove long_description_content_type from setup.py by @Breaka84 in #57
• drop changelog from pypi description (cannot render rst documentation) by @Breaka84 in #58

Full Changelog: v3.3.9...v3.4.0