[new release] spin (0.7.0)
[new release] spin (0.7.0)

CHANGES:

## Added

- Added a new `spa` template to generate Single-Page-Application with Js_of_ocaml
- Dune's `--root` argument in templates' Makefiles to better compose generated projects
- The templates CI/CD is now caching Opam dependencies to improve build time
- The templates are now installing locked dependencies by default during CI/CD
- The Makefile of the templates include a small inlined python script to open the documentation with the default browser with the command `servedoc`

## Changed

- Removed the `bs-react` template from the official templates. The template now lives in [tmattio/spin-rescript](https://github.com/tmattio/spin-rescript).
- Removed dependency on Reason and use the generated project's Reason to convert `.ml` files to `.re`.

## Fixed

- Fixed NPM release by vendoring a Chamomille-free version of Inquire
- Remove wrong release flags from all templates

jhwoodyatt/opam-repository,toots/opam-repository,mjambon/opam-repository,kkirstein/opam-repository,nberth/opam-repository,yallop/opam-repository,talex5/opam-repository,seliopou/opam-repository,hannesm/opam-repository,dbuenzli/opam-repository,pqwy/opam-repository,ocaml/opam-repository,jonludlam/opam-repository,jonludlam/opam-repository,c-cube/opam-repository,jhwoodyatt/opam-repository,hakuch/opam-repository,fpottier/opam-repository,toots/opam-repository,hannesm/opam-repository,Leonidas-from-XIV/opam-repository,andersfugmann/opam-repository,astrada/opam-repository,Chris00/opam-repository,arlencox/opam-repository,pirbo/opam-repository,kkirstein/opam-repository,pirbo/opam-repository,astrada/opam-repository,dbuenzli/opam-repository,yallop/opam-repository,seliopou/opam-repository,djs55/opam-repository,c-cube/opam-repository,nberth/opam-repository,lefessan/opam-repository,andersfugmann/opam-repository,mjambon/opam-repository,pqwy/opam-repository,codinuum/opam-repository,fpottier/opam-repository,Chris00/opam-repository,codinuum/opam-repository,djs55/opam-repository,abate/opam-repository,orbitz/opam-repository,cakeplus/opam-repository,talex5/opam-repository,emillon/opam-repository,emillon/opam-repository,ocaml/opam-repository,lefessan/opam-repository,Leonidas-from-XIV/opam-repository