For the README:
- Improve the format, getting rid of the textwidth-based linebreaks and
instead putting each sentence on its own line.
- Have an example for a local check execution to have the examples be
more diverse.
- Describe the docker compose example and have it be up-to-date.
- Better describe the local setup example.
- Reformat the section on commands and arguments, first describing the
commands and then the arguments, as this makes more sense
structurally.
- Also change the title of the arguments and environment variables
section to reflect its content on commands.
For the help output mirror the command descriptions of the README and
improve the format.
Switch to a library which is more well-known.
I also thought the library was the problem for not being able to
template in a JSON path, but that is just a PostgreSQL problem it seems.
