Use Acts from Github, bump version

This switched the remote to the Github repo at https://github.com/acts-project/acts, and bumps the tag to v0.22.0. I'm trying to force a clean checkout. In my tests, no changes where required in Athena master.

Changes since v0.18.00 are:

v0.19.00

Bug

• !782 - Abort propagation when an interaction kills a particle

Improvement

• !792 - Bump required boost version to 1.69
• !791 - Include momentum in error estimation of the EigenStepper
• !784 - Seedfinder test: specify input file on command line, quiet output
• !783 - Allow partial event simulation in case of errors
• !777 - Promote Polyhedron to Surface base class

Uncategorized

• !787 - Remove redundant geometrySignature

4 issues addressed in this release:

Bug

• #697 - Abort condition from the physics lists are ignored

Improvement

• #709 - Remove redundant geometrySignature
• #716 - Allow partial event simulation in case of errors
• #705 - Use Polyhedron representation for Geometry building

v0.20.00

Bug

• !797 - Workaround for is_invokable problem
• !795 - Vertexing: AMVF bug fix

Improvement

• !804 - Consistent storage and access schema for bounds - part 2
• !799 - Remove printout from Propagation Integration test
• !798 - Use DDCore target directly
• !789 - Consistent storage and access schema for bounds
• !785 - Clean up the parameter definitions

Infrastructure

• !801 - Allow overriding clang-format binary with an env var
• !800 - Set up Github Actions jobs to run checks and builds

Uncategorized

• !802 - Remove propagator options from vertexing configs and performance upgrades
• !796 - Add code style/ naming guidelines

3 issues addressed in this release:

Bug

• #718 - Free parameters are missing an enum detailing its content.

Improvement

• #719 - Consistent storage and access schema for bounds

Uncategorized

• #722 - Add code style/ naming guidelines

v0.21.00

Improvement:

• Visualization geometry #91
• Visualization surfaces #84
• Miscellaneous AtlasStepper and EigenStepper fixes, AtlasStepper docs #85
• Create CODE_OF_CONDUCT.md #81
• Move Visualization into separate folder #80
• Add AMVF unit test for user-defined track type #75
• Contributions update #66
• Removing clone functionality #72
• Add badges to readme #70
• Add missing acts namespace in AnnealingUtility #68

Infrastructure

• Add config for W I P app #89
• Attempt to fix codecov configuration #87
• Add config for new bots #65
• Run coverage job on master and PR to master #69
• Add codecov tolerance threshold of 0.1% #79

v0.22.00

Improvement:

• Merge impact point estimators #106
• Have CTest display test output if a test fails #105
• Gaussian vertex seedfinder cleanup and performance updates #101
• Record volume material in the Interactor #92
• Move StandardAborters, Debugger out of detail #98

Bug Fixes:

• Fix access stereo variable in DiscTrapezoidBounds #108