11.15.5

Changelog

• improv: post errors when using non-existent folders
• build: improve Justfile
• ci: add cover edge cases for rsync
• chore: add markdownlint config
• fix: rsync commands
• style: update .editorconfig
• ci: bump action step versions
• docs: cleanup
• build: update release script
• build: exclude more config files
• build: exclude config files