MINOR FIX - VERSION 1.5.1

Apologies to anyone wondering why chapter select was launching into a specific map, I was just tinkering with a new map and noticed chapter select wasn't working as intended, instead it was launching the 'ordinance storage' map towards the end of the Chapter "Surface Tension". It's fixed now, so I'm just popping in to update the current version to 1.5.1, cheers.

"STAHP!!!"

- Jim