New Features and bug-fixes

Tesseract Compatibility. - http://puu.sh/23ech
Recipe for mod-sink (9 mods max, use a chassi if you want more).
Firewall pipe - block (or only let through) items of specific types

Bugs fixed:
Providers were using too much cpu.
Idle network checks use less cpu; route changes/pipe removals/additions still guaranteed to be detected within 1 second.
huge crafting requests won't cause lag spikes (lag from bc from the resulting item flows lp takes no responsibility for)

various code updates ; should have less overall cpu usage, less lag spikes, even under high load.