Update notes for v0.51

[p]Truck City v0.51 has just been released. This is the change log:[/p]

• [p]Feature: each factory can be configured to only allow inbound containers from factories in a configurable range[/p][p][/p]
• [p]Balance: all rocket parts are now x2 to x5 slower to manufacture, rocket launchpad is x10 slower. Affected factories: Ammonia Synthesizer, Orbital Fuel Unit, Ammoxidizer, Polymer Carbonizer, BPA Condensation Reactor, Epoxy Polymerizer, Insulation Factory, Rocket Launchpad[/p]
• [p]Balance: production time also increased (to a lower degree) for the following factories: Iron foundry, Steel foundry, Rebar foundry, Piping factory, Grinder-magnetizer, Engine Assembly, Copper Foundry, Electromagnetic Coil[/p]
• [p]Balance: in mission 13-War Logistics, uranium is now harder to produce[/p]
• [p]Feature: confetti on victory![/p][p][/p]
• [p]Improvement: full dependency graph for item production is now a bit clearer[/p]
• [p]Balance: initial amount of money increased in tutorial 1[/p]
• [p]Improvement: added information on distance to destination in the truck window[/p]
• [p]Bugfix: fixed minor glitch where containers in warehouses might get partially obscured by the factory overlay when Alt mode was enabled.[/p]
• [p]Bugfix: minor bugfix where the factory overlay for Alt mode was not correctly updated on rocket launchpad deletion[/p]
• [p]Bugfix: fixed bug where parking spots may be counted as occupied even when empty[/p]
• [p]Improvement: improved translations[/p]
• [p]Improvement: efficiency improvements on copy/pasting[/p]