Support `-h` to display help

Tamschi / reserde

A RE-SErialising DEserialiser - that is: a document converter. Currently supports Bencode, Bincode, CBOR, JSON, TAML, XML, x-www-form-urlencoded and YAML.

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Support `-h` to display help #30

Closed Tamschi closed 3 years ago

Tamschi commented 3 years ago

Is your feature request related to a problem? Please describe.

Currently only --help works, but -h should work too.

Describe the solution you'd like

The easiest option here would likely be to switch from argh to structopt.

Describe alternatives you've considered

None.

Additional context

Additionally, providing no options at all should also display more help text.