More fixes and minor improvements.
- fixed incorrect values of altitudes of sub-floor levels
- music reset modes: you can now choose to not reset music if it is the same
- changed line-of-sight blocking rules for: Orb of Fish users, Yendorian trunks, Lost Mountain, Round Table
- line-of-sight fixed in shmup (works against enemies, takes precise position into account) and in multiplayer
- in PTM minimal, the 'gold medal' is shown at 50 as intended, not 5
- switching LOS or hardcore during a PTM/YC/PrC run now resets the run
- fixed a possible crash
Have fun!