Use multiple composer versions simultaneously. Introduction Composer 2 It has been six months since Composer 2 saw the light and I finally dared to deliver some Drupal projects entirely with Composer 2. Anyone who works with composer knows that after years of using `composer require`, you have learnt by now a second language, you can play a new musical instrument, or dive into the downward facing dog with convincing flexibility, as if you were an accomplished yogi. Time and again the upheaval was great when, after getting two cappuccinos, you found out that 'composer require' had…