0.5.3 release

[maurolacy]

Closes #13.

[uint]

LGTM

[ethanfrey]

Looks good.

Before tagging, we need to set up the GITHUB_TOKEN in the CI so it will publish the build artefacts (wasm) automatically.

[maurolacy]

Before tagging, we need to set up the GITHUB_TOKEN in the CI so it will publish the build artefacts (wasm) automatically.

Will try to do it, and ask you in any case.

Update: Done. Followed this: https://circleci.com/blog/publishing-to-github-releases-via-circleci/ and created a Personal Access Token with repo:status, repo:deployment, repo:public_repo and read:repo_hook permissions.

Update2: Had to add the workflow, admin:org and admin:org_hook to make the release artifacts publication work. This is probably because this repo is still private. We can use a more restrictive token once this is public.

[ethanfrey]

One more issue popped up, can it be squeezed in?
https://github.com/confio/tgrade-contracts/issues/438