v3.0.0

Updated to pyroll-core 3.0.0 and added the following packages:

• pyroll-gripping-analysis
• pyroll-interface friction
• pyroll-elastic-mill-spring

v2.1.1

Full Changelog: https://github.com/pyroll-project/pyroll-basic/commits/v2.0.3

v2.0.2

• remove Hitchcock
• import missing Zouhar