v0.1.0

Feature/global installer (#1)

* Added support for a global install directory

* Schema change

* Remove symlinks after removing a package

* Reset path after dumping autoload

* Code style

* Added a custom autoloader to resolve symlinks to their absolute paths

* Removed logic to force install paths as this is now handled by the autoload generator

* Make sure the plugin's autoloader is run when requiring, installing or updating the package

* Create CODE_OF_CONDUCT.md

* Create bug_report.md

* Create feature_request.md

* Added support for global configuration

* Added README

* Added author

* Documentation

* Support all packages

* Added a CHANGELOG

* Updated PHPDOC

* Better method name

* Added badges

* Change version

Co-authored-by: Daniel Koster <me@danielkoster.nl>
Co-authored-by: Daniel Koster <d.koster@iwink.nl>