Update to v2.0.4 for OCPN5.6.2

[antipole2]

Allows push of NMEA data starting !

[antipole2]

Dave - error is in target name. I wrote in Zulip..

Secondly, I need to leave the wx315 files in the catalogue for OCPN5.6 but the darwin xml contained target of darwin-wx315, which is no longer accepted during checks after the pull request. It seems the options are now darwin & darwin-32. So I edited the target in the xml file to darwin and PRd again. It passed checks this time.

to which Alec said

You should not make that edit. Instead, leave it as-is and make a notd to Dave why the check fails. He is aware of the situation, and will merge anyway. Changing the target to wx-32 passes the checks, but might crash in runtime since these old plugins actually are linked against wx 3.1.5

[bdbcat]

@leamas:
Why not revert the XSD, and add back darwin-wx315? For just this sort of case, maintenance of plugins for O562.

[leamas]

Because if we did, we would approve wx-315 plugins for 5.7/5.8. That is, better a false positive than a false negative.

I see no solution besides actually deal with #818, but this is IMHO way to late in this cycle.

[bdbcat]

OK, I see that. sigh....
Thanks