Björn Andersson

Add support for hiding diff signs (leading + and -)

9

The `+` and `-` signs in diff views can be removed by changing the new option `diff-show-signs`. When set, only the color of the lines distinguishes added, removed and context...

Add parameter for `on_error` to `BusABC.send_periodic`

1

If there is an error while sending messages in a (background) periodic task, then the `on_error` callback is called, if set. If the callback is configured and returns `True` then...

### Describe the bug When setting up a periodic send task there is no way to configure the `on_error` callback in the task. Therefore, if the very first send attempt...