This makes the filters similar to output options.
- Adds coherence to error messages.
- Enable aliases (used the ones suggested by @leoheck)
Additionally now the README.md preflights documentation comes directly
from --help-preflights
Pro:
- Much easier to add new outputs and pre-flights
- All options are optional
- Much better configuration syntax check
- Access to data is simpler
Cons:
- Much more source code files
- I focused on one application, not multiple instances running on the same
process.