v1.2.0

• Implement an append(...) method which updates a message without overwriting it.
• Add an optional title argument to pbar_init, which will be placed above the progress bar.

v1.1.0

New features:

• Deleting a previously sent message
• Updating a previously sent message
• Uploading a file
• A progress bar

Fixed bugs:

• When the connection to the Slack client fails during message sending, we except that now and log an error instead of failing the script.

These features were contributed by @RobertTLange , thanks ;)

v1.0.0

Update README.md