Xcoll release 0.5.5

What's Changed

• Implemented new API on the line, providing (for now) the following functions:
  • line.collimators.assign_optics()
  • line.collimators.open()
  • line.collimators.to_parking()
  • line.scattering.enable()
  • line.scattering.enable()

Develop Updates

• Updated tests and examples for new API
• Fixed test__list_tests by giving it a recognisable path

Full Changelog: v0.5.4...v0.5.5