QOL Update (V0.51) — Pixel Descent Steam update #820342

- Improved readability and feedback for certain UI elements. - The shop button will now flash yellow if you've collected gold in a previous run. - Brightened the coloring for several crosshairs to make them stand out better. - A colorblind mode can now be enabled in the options menu, this will display differentiating symbols on all doors. - Added a tutorial for basic controls to assist new players. - Keys you don't currently possess now appear grayed out on the HUD. - Health and mana regen upgrades now affect regen interval instead of the amount. - Added a brief period of invincibility after teleporting (0.5 seconds). - The movement speed of enemies and their projectiles has been reduced slightly.