v0.1.0

Un-abandoned. Introduces a new config file format, command line options,
and a completely different design approach.

Instead of submitting multiple time entries together via a generated
weekly time sheet file, the program now only permits submitting a single
time sheet at a time. This makes it much easier to use.

Additions:

* Command line arguments
* Submitting a time entry works
* Configuration provided by a `config.toml` file
* Make the `password_cmd` configuration setting work
* --list-modules command to list sprints and their IDs for copying to
  the config file

Deletions:

* Generator and templates
* YAML configuration
* A bunch of old code that wasn't relevant to the new design