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
# The default keymap for Acperience12

This keymap is for operation verification.

```
,-------------.
|  1   |  2   |
|      |      |
|------+------|
|  4   |  3   |
|      |      |
|------+------|
|  5   |  6   |
|      |      |
|------+------|
|  7   |  8   |
|      |      |
|------+------|
|  9   |  a   |
|      |      |
|------+------|
|  b   |  c   |
|      |      |
`-------------'
```