Try to allow non-destructive installs
Restored supports() method
Added small phpdoc
Added some verbosity
Updated phpdoc
Merge pull request #11 from ezsystems/install_over_existing_clean

Fix EZP-21848: Allow composer updates of Legacy Stack not to delete an installed legacy site
Merge branch 'master' of github.com:ezsystems/ezpublish-legacy-installer
Made install dir messages a bit clearer
Added pluginInstaller class, making this a plugin (not sure if it's really needed, but it is there in the latest composer docs...)
Added both LegacyKernel and LegacyExtension installers
Made base LegacyInstaller abstract
Merge pull request #12 from ezsystems/composer_plugin

Update to use new Composer plugin API
Merge branch 'master' of github.com:ezsystems/ezpublish-legacy-installer