Reminder: Fedora 29 self-contained change deadline

[Ben Cotton]

Hello everyone,

This is your reminder that the deadline for self-contained changes is
24 July 2018. The full Fedora 29 schedule is available at
https://fedoraproject.org/wiki/Releases/29/Schedule

Changes not marked with the "ChangeReadyForWrangler" category by the
deadline will be moved to Fedora 30.