Fix Composer version issues#16

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philipdowner wants to merge 4 commits intoRarst:masterfrom

philipdowner:fixComposerVersionIssues

Commits on Mar 21, 2025

Updates composer-installers to v2.3.0
Philip Downer
committed
Adds docs for creating a fatal error mu-plugin
Philip Downer
committed
Adds link for mu-plugins to WP docs. Restores Composer namespace
Philip Downer
committed
Adds 2.0.0 version, removes README block and IntelliJ .gitignore directive
Philip Downer
committed