Compatibility with Composer 2.0

This release fixes compatibility issues with the new plugin API introduced in the Сomposer 2.0 release.

Updates done according to Upgrade guides for Composer 1.x to 2.0

v1.1: Merge pull request #5 from oat-sa/feature/path_repository_compatible

Feature/path repository compatible, fixed compatibility with latest composer API

TAO 3.0.0 Release of composer extension installer

Install tao extensions in the folder defined according to composer.json