Unvanquished 0.54.1: Enhanced Rendering and Improved Bots

Unvanquished 0.54.1, an open-source first person shooter game, has been released with rendering fixes, memory leak fixes, an updated WebP image library, better bots, translation updates, and various in-game enhancements. This release is similar to what could have been Unvanquished v0.55 but was not carried out due to time constraints.