Release documentation

Release process

1 Clean environment

```bash
make clean    # delete all temp files
make prepare  # commit deletions
```

2 Python package

Bump version of ssh_ipykernel

A new release candidate with rc0
```
make bump part=major|minor|patch
```
A new build
```
make bump part=build
```
A new release
```
make bump part=release
```

A new release without release candidate

make bump part=major|minor|patch version=major.minor.patch

Create distribution
```
make dist
```
Create and tag release
```
make release
```
Deploy to pypi
```
make upload
```

3 Labextension

Change into folder ssh_ipykernel_interrupt and the follow 2

4 Push repo and tag

```bash
git push
git push origin --tags
```