v0.1.0.3 alpha build

This build focuses mainly on bug fixes.

- Fixed a bug, where player can get stuck to walls while jumping and then indefinitely wall-jump to places that shouldn´t be possible

- Fixed a bug, where collectibles aren´t shown immediately, when player loads from level 1 to level 2 (collectibles became visible after dying once)

- Fixed a bug, where collectibles weren´t flying towards their respective counters in the HUD, when loading from level 1 to level 2