Merge tag '0.14' into develop

Version 0.14
Use cURL as default.
As cURL is faster and seems to be better with proxies.
Merge branch 'SyZn/patch-1' into feature/prefer-curl-over-urlfopen
Merge branch 'feature/prefer-curl-over-urlfopen' into develop
Respect verbosity setting when running as process.
Extract command line generation into private method.
Add profiling support for process execution mode.
Add custom repositories to initial composer.json.
Merge branch 'release/0.15'