v0.62 Release notes

-minor tile rotation fixes
-fixed bug where beam would keep casting after Malachi's dead
-tweaked handling of dying enemies
-minor tweaks to room layouts
-added relic vendor
-tweaked cat movement ai
-added relic tab in inventory
-added relic mana boost which can be bought from relic vendor
-fixed the case where the boss in the 5th room would keep coming back after saving
-minor tweaks to save/load process