Small adjustments to the Detroit Diesel Integrated Powertrain RPM range

Adjustments to fuel consumption for every engines.

Changing the default transmission for the DD13 Integrated Detroit Power from an direct drive transmission to an overdrive, as per configuration on Freightliner website

Updated sounds with latest pack from Kriechbaum

Added support for the 2019 Freightliner Cascadia

Added DD13 back to the Western Star 49X (According to Oscar, one of the devs, the DD13 is available on the 49X, western star is simply pushing for the DD15 and DD16 for now for it)

i-Shift restricted to Volvo engines now, until someone can find a real example of a VNL with a cummins engine with an i-Shift transmission

Added support for bigdaddyt150 379x.

Note that as with the real truck, I only added the C15 engine as the 379X only came with a C15, there will be no other engine added to that truck.

Changed the number of positions for the Allison Transmissions retarder to 6.

Note that this is the real number of positions that they have in north america when it come with the control joystick, the only other control option for an Allison retarder is an on/off switch instead that either give full retardation or none