0.5

CHANGES:

• Remove {build} directive into the OPAM file (@craigfe, #10)
• Add unsafe_bigarray into Rke.Weighted (@anmonteiro, #11)
• Lint OPAM file (@kit-ty-kate, #12)
• Fix the distribution and the CI (@dinosaure, #13)
• Update the distribution with cmdliner.1.1.0 (@dinosaure, #15)