Upgrade can only be called if phpbrew is on - refs #171
Upgrade can get current php major version - refs #171
Upgrade can get latest minor version of a major version - refs #171
Upgrade can get current variants - refs #171
Mock phpbrew to not depend on external things
Upgrade installs newest minor version with same variants as current minor - refs #171
Use more generic functions
Upgrade can list ext-installed extensions - refs #171
Upgrade installs currently installed extentions to the new version - refs #171
Fixed tests executing real things
Upgrade command fully working - refs #171
Added upgrade command to the bash script - refs #171
Added upgrade virtual command
Inform user if already up-to-date - refs #171
Compiled phar
Upgrade script is not yet on user machine

Kinda forgot this detail ~~
Compile phar
Merge pull request #171 from chadrien/feature/upgrade

Add an upgrade command
Use --like option as it already exists - refs #171
Merge branch 'develop' of github.com:c9s/phpbrew into develop