Merge pull request #3 from JuliaString/spj/updateci

Change to use GitHub Actions

Update scripts, add version to Project.toml

Update for Julia v1.1, drop support for v0.x

Clean up Project.toml

Fix uuid to match Registries/General

Update REQUIRE

Removed old Project.save

Fixes for Pkg3

Update REQUIRE and use Pkg3 on v0.7