Cleanroom Relauncher

Changed

• Fetch Cleanroom releases from CleanroomMC's Maven first, with GitHub as the fallback
• Java arguments now support multiple whitespace, quotes and escape characters
• Removed eMudhra's emSign root CAs from the bundled CA certs used on Java 8u101 and older, following their distrust after the eMudhra key compromise

Fixed

• Crash with No Cleanroom releases are available to relaunch with. when GitHub returns an empty release list
• An empty cached release list no longer persists, it is fetched again on the next launch
• accessToken is no longer printed in the relauncher's debug log
• Loading popups no longer flash briefly on later launches when nothing needs downloading