Updated to work with P21 for vanilla freight merger's impact on the code.

Moved the code into its own namespace to not conflict with the upcoming vanilla versions of the machines.

Moved the code into its own namespace to not conflict with the upcoming vanilla versions of the machines.

Bug Fix: Fix for ArgumentOutOfRange exception in FreightCartMob.RetrieveExcess

Enhanced feature: Cart distribution between stations by demand is further improved by also looking at the number of carts servicing highly demanded stations. A small adjustment is used to penalize stations that already have many carts en route so that nearly equally demanding stations may also get some attention.
New Feature: carts now track their approximate time to their destination and report it on the system monitor. Carts nearing arrival will slow down a bit before arriving for a cleaner approach.

Bug Fix: Actual fix for slope derails... SORRY!!

Bug Fix: Potential fix for slope tracks?

Bug Fix: Possibly resolved the crash on junction reset? At least I can't reproduce it after cleaning up a bunch of the code. Get me a log if you have it occur again!

Bug Fix: Carts now correctly set their block offset and speed per tick to zero when they go idle or enter a station. This should resolve many oddities with navigation for fast carts and networks with many boosters.

Bug Fix: Carts starting navigation from a junction will no longer pop an additional junction off the nav stack.