Giit

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* Major: Added support for python 3.10.x, this required a switch from
virtualenv to venv for virtual enviroment management.

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* Minor: Support other default branch names than master.
* Minor: Change the order of tasks so that working directory is always
built first. Then branches, followed by tags in ascending order.
Building the working directory first allows the giit run to fail quicker since
most issues are in the working directory.
* Patch: Fix some spelling errors.

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* Patch: Really fix readme.

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* Patch: Fix readme.

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* Major: Remove SFTP feature.
* Major: Introduced optional variables. These work in a similar way as normal
variables, execpt they will be removed if they doesn't exists and you need to
use `£` instead of `$` to use them.
* Minor: Added support for extra variables provided as command line arguments.

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* Major: Make giit work for repositories without remotes