Value length cap

[AlanLarsson]

I've run into the problem of the value being capped at around characters 199xx.
Usually it's not a problem except for one specific message that can be severa times that length.

[Lokhozt]

Same problem here, the message max length appears to be limited to 20 000 characters with copy to clipboard.

[thomasnordquist]

It is a known limitation, I plan to make this configurable.
Limitation is to prevent large messages to exhaust the available memory.

memory = time (message history) x topics (in the tree) x message size
Example: 100 messages * 1000 topics * 20000bytes => ~2GB RAM

[dleidert]

Possible duplicates are #504 and #735.