git-maintain-0.6.0

• Speed up push_stable
• Add --check option for push_stable
• Add --no-fetch option
• Cleanup release email
• Add build timestamp for running build in monitor
• Add --watch for monitor and monitor_stable
• Fix bad output ot git maintain steal
• Rewrite log system and handle colors
• Add list_stable command
• Rework branching constraints to support more flexible names
• Add create command to create missing local branches
• Add delete command to remove temporary working branches