FILTER based on message content request

[s3c]

When the network is busy, a lot of traffic that isn't necessary clogs it up for everyone. For example:

STATION-1>APT311,WIDE1-1,WIDE2-1:>TinyTrak3

In fairness, the TinyTrak is great, but packets like those that don't include a position aren't useful at all. Being able to filter out things like those on message content could help clean up the network by not digipeating unnecessary info. Maybe something like this for example:

FILTER 0 0 ! c/^TinyTrak[0-9]$

[wb2osz]

Good idea. We should have a filter for the information part content.