add docker CI and publish action

Added GNU v3 License and Copyright

project phase 1 completed. Set to version 1.2

project phase 1 completed. Set to version 1.2

project phase 1 completed. Set to version 1.2

added min-cost max-matching solver. Set to version 1.1.0

Release 1.0, some minor cleanup.

[Refactor] project is split into two parts: Model and Solver.

[Improver] Added soft_objective_threshold. An improvement on the soft…

…_objective must be bigger than this threshold. Set it to 10.0