Added difficulty selection to load game dialog

[Modding] Added (per savegame) mod settings feature (wip)

[Modding] Added user-definable minimum radius to track type (slope still wip)

[Modding] Added customizable factors for train acceleration/deceleration

[Modding] Added con feature to add/remove other modules when a module is built

Improved keyboard shortcuts: now possible to use Shift/Ctrl/Alt

Improved keyboard shortcuts: show key bindings in tool tips

Improved keyboard shortcuts: added more commands (construction menu)

Improved settings menu: show warning in case of duplicate key bindings

Improved settings menu: added button pointing to "userdata" folder

Improved vehicle store: show whether reversible or not (vehicle config still wip)

Improved airport: landing lights module now automatically removes opposite lights

[Modding] Improved in-game console: cursor, selection, copy/paste, scroll to end

[Modding] Improved console command prompt auto-completion

[Modding] Improved scripting interface: new functionality now available under api.*

[Modding] Improved scripting interface: added utils, resource types, mdl metadata

[Modding] Improved scripting interface: added argument names for many functions

[Modding] Improved error handling: show complete file name on error

[Modding] Improved error handling while building a construction (don't crash)

Fixed random crash in module mode

Fixed tree highlighting in module mode

Fixed Bombardier DHC-8-402PF animation details

[Modding] Fixed asset categories case-sensitivity issue

[Modding] Fixed file names cut off in Lua error messages

[Modding] Fixed user and staging mods not recognized as mod folders (isModPath)

[Model editor] Fixed track ballast material