1.2.1: Allow Composer 2.0-dev

Fix #7 Allow Composer 2.0-dev

1.2.0: Allow next API of Composer 2

• Allow next API of Composer 2
• Throws NotUpdateInterfaceInstanceException if no UpdateInterface passed
• Prefix all errors of UpdateHelper

1.1.1: Check UpdateHelper is available before calling it

Check UpdateHelper is available before calling it

1.1.0: Use archive-dir to allow custom vendor-dir settings

Use archive-dir to allow custom vendor-dir settings

1.0.1: Skip dependencies checking if composer.json not in vendor-dir parent

Skip dependencies checking if composer.json not in vendor-dir parent

1.0.0: Initial release

Initial release