Merge branch 'master' into develop
remove Guzzle
disable download progress on Windows
Merge branch 'issue-134' into develop
correct set utm
use PSR-4
change image
correct clear cache from prod, test and dev env
use prod env
change version for symfony and guzzle
configure tests
configure scrutinizer
add code coverage image
correct use package options
add tests for package events
add tests for project events
add tests for update itself events
add test for event dispatcher
add test for merge composer requirements
add test for merge configs