GitLab

* refine docs for multi-backend alpha release

* docs: further tweaks to multi-backend alpha docs

* docs: further tweaks to multi-backend alpha docs

* docs: further tweaks to multi-backend alpha docs

* docs: add multi-backend feedback links

* docs: add request for contributions

* docs: small fixes

* docs: small fixes

* docs: add info about `main` continuous build

* docs: further tweaks to multi-backend alpha docs

* docs: further tweaks to multi-backend alpha docs

* cpu benchmark

* try to fix formatting

* cleanup

* cleanup

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Co-authored-by: Titus <9048635+Titus-von-Koeller@users.noreply.github.com>