Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

readme.md
# Oddball v2.1

Make examples for this keyboard (after setting up your build environment):

```
# with ADNS sensor
make oddball/v2_1:default
```
```
# with PMW sensor
make oddball/v2_1:pmw3360
```