v1.4.4

Nmcp 1.4.4 retries more aggressively when Sonatype is flaky, and makes it more explicit that publishAllProjectsProbablyBreakingProjectIsolation() is still OK to use if you don't mind about project isolation.

• Implement retry for snapshots/deployment upload/status check (#244)
• Move the empty files check to execution (#243)
• Update deprecation message (#247)