Update documentation, and other files [skip ci]

Fixes docs (#907)

Update .ruby-version (#904)

Add new endpoint - List Emails (#902)

* Add new endpoint - List Emails

* Adding problem filter

Minor/major updates

Integration Xebia Functional (#855)

* upgrade 47degrees to xebia-functional

* Update sbt-microsite

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Co-authored-by: Juan Valencia <[email protected]>
Co-authored-by: Fede Fernández <[email protected]>

Merge pull request #817 from nicoulaj/fix-assert

fix test assert returning success in case of decoding error

Update sbt-scoverage to 2.0.0

Update sbt-tpolecat to 0.1.22

Ignores update branch integration test (#694)