Embark v0.7-beta

What's Changed

• Release 0.7 by @Tapeline in #1

Full Changelog: v0.6-beta...v0.7-beta

Commit messages

Ignore fixtures in WPS
Fix unused import
GitHub runners still somehow cannot process download testing.
Fix relative custom tasks imports Add more tests: bump up coverage to 71% 
More tests Fix issues Add refactoring backlog items
Add testing on develop branch
Delete files that do not belong to this project 
Add minimal installing tests 
Update doc
Add very basic test for install
Add abstraction on cmd Tapeline
Add os and install abstractions