Release 0.3.0

[freddieknets]

• Updated off-momentum loss map example.
• Removed add_crystals from manager as it is obsolete.
• Typo in example
• First steps of moving RF sweep out of manager.
• Finished RFSweep implementation, added separate example and a test.
• Bugfix in collimator.jaw
• Added weights to lossmap.
• Updated version script.
• Added protection hook installation
• Added license headers.
• Release branch naming convention from xtrack.
• Added check of clean working directory for version script.
• Update manager.py
• Update manager.py
• Quick addition to example to make TCP identification more robust
• Added a function in colldb.py (write_to_yaml) to dump loaded colldbs to disk in the yaml format. They can be imported back in. A test was also added in test_colldb.py
• Updated madx to xsuite script in examples
• Updated impacts table implementation and some small corrections
• Renamed 'bend' to 'bending_radius' in EverestCrystal
• Added EverestBlock element, separated multiple coulomb scattering and added a flag to avoid edge effect calculation, and renamed the InvalidCollimator into InvalidXcoll.
• Added examples for EverestBlock
• Updated example with air scattering to be a transfer line
• Updated version number to v0.3.0.