CHANGE: Reduce the axle load and increase the power of the LNWR Watford Tank
FIX: Missing LBSCR 2nd class 4 wheel carriage
ADD: Images (awaiting .dat files) for numerous MR carriages
ADD: Graphic (without .dat files for the present) for the Midland Railway 65ft clerestory dining carriage.
Merge branch 'new-experimental-master' into new-experimental-fixes