Push
Pushes your current commit and all parent commits until it reaches one that’s already submitted.
tw push
If a commit has never been pushed before (meaning it does not have a server id, commit ids?), it will automatically appear in Pending Commits section. Otherwise will just update current commit and all of it parents.
If a commit already exists on the server, Twigg simply updates the server with the latest state of your current commit and increases its version.