Version 1.5
a) Added "Isambard GWR Signals" signal and waypoint menu category

Version 1.4
1. New platform starter (stop) signal waypoint.
2. New siding starter (stop) signal waypoint.
3. New side bracket signal track asset.
4. New fixed distant signal track asset.

Version 1.3
a) Revised workshop description.

Version 1.2
a) Corrected short square post rear face UV mapping of dummy overhead combined signal.

Version 1.1
a) Terrain alignment removed from gantry and bracket posts.
b) Whistle board model revised to reduce flicker when viewed from an approaching train.

Version 1.0
a) Initial release.