tool/release/README.md

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# Auto tagging for release

### Usage: `$ ./tool/release/release.py [-h] [-y] <type>`

### Option:
  - `[-y]`
    - In interactive mode, it is for user to confirm. Could be used in sript.

### Argument:
  - `<type>`
    Allowed release types are `major`, `minor`, `patch`, `rc`, `stable`.
    - `major` increments major version by 1.
    - `minor` increments minor version by 1.
    - `patch` increments patch version by 1.
    - `rc` increments rc version by 1.
    - `stable` removes rc version.


### Example:

  1. Pre-releasing major will update from 2.1.1 to 3.0.0-rc0

    run `$ ./tool/release/release.py major`

  2. The release candidate needs some revise, from 3.0.0-rc0 to 3.0.0-rc1

    run `$ ./tool/release/release.py rc`

  3. The current version is released as stable, from 3.0.0-rc1 to 3.0.0

    run `$ ./tool/release/release.py stable`


## In the release.py

Internally, the script retrieve latest git tag by `git describe`,
and increment the version accroding to semantic versioning,
then push latest tag to remote master.

## Next step

CI will automatically detect the update in master
and build and release conda packages.