1.4.0

Changes

• Switch to Composer 2.0
• Display new versions in the installed packages list
• Added link to Composer Resolver Cloud availability page
• Added inline forker for servers that don't support background processes
• Various small fixes

GitHub Issues: https://github.com/contao/contao-manager/issues?q=milestone%3A1.4.0

Read the release announcement on contao.org:
https://contao.org/en/news/contao-manager-1-4.en.html