v0.14.4

Additions

• Add StreamSource to adapt an async Stream to an EventSource. (#228)
• Bump MSRV to 1.71.1 in accordance with dependencies.

Bugfixes

• Fix handling of notified atomic in futures source. (#227)
• Prevent timers from growing indefinitely. (#238)
• Bump nix to v0.31. (#237)
• Ping on drop of last instance of SyncSender. (#236)