Command line usage should be written to stdout

[Lassi Kortela]

sagittarius -hand sagittarius --help

should write the help message to stdout. In 0.9.8 it’s written to stderr, so you can’t do something like sagittarius -h | less

[Takashi Kato]

I don’t recall why it prints stderr (I think maybe I just checked other implementations, and they print it stderr). I’ll change it

[Takashi Kato]

Printing help message on stdout if it is intended (Fixes #282)

→ <<cset 98aaf967f6a7>>