Bump version

Merge branch 'wip'

Please linter

Fix default to print help for groups

Please mypy

ignore pipenv files

we use setup.py extras

Add extra requirements in setup.py

Replace Taskfile shell script with Justfile

https://github.com/casey/just

Support argcomplete if installed

update Taskfile

Replace build.sh with Taskfile

Climatik v0.4.0

Add examples

Update README

Fix arguments default type

Add unit tests

Set arguments help string via docstring tag

Use `@param arg: help text` to set help text for the argument `arg`

Command group

allow to group subcommands. group can be passed as `group_name` parameter
to the `@command` decorator. Help and descriptions for the group can be
set using `group()` function.

The `group()` function works also as a context manager: all commands
defined inside the context are assigned to the group.

This allow to implement cli like "docker image <command>"

Allow to set command name in decorator

Param `command_name` passed to decorator will override function name

Add typing marker to package