Nightly test new CI image (use-ink#115)

* CI: put image name into a var so it can be changed by a upstream pipeline trigger

* CI: explanation for the ancestors

For installing from ink CI for v0.8.0 while waiting for new crates.io…

… release

Release v0.7.1 (use-ink#87)

* Bump version

* Update CHANGELOG.md

Release v0.7.0 (use-ink#82)

* Use ink 3.0.0-rc1

* Fix template ink deps

* Fix deprecation warnings

* Update CHANGELOG.md

* Update README

* Fmt

* Add README to metadata crate to allow publishing

* Add templates dir to include for publishing

* Update Cargo.lock

* Just make it 0.7.0 release

Update CHANGELOG.md

For installing from ink CI while waiting for new crates.io release

Update dependencies

Release v0.6.0 (use-ink#50)

* Update subxt and bump version

* Update CHANGELOG

* Update README

* Fail build.rs when error, add diagnostics

* Rename template Cargo.toml files so they are not excluded from the package

It appears any dir with a Cargo.toml (not included in the workspace) is excluded from the package.

* Reorder env vars for clarity

* Add mention of crates.io release in CHANGELOG

* Valid category slugs

Release v0.5.0 (use-ink#48)

Bump to v0.4.1