Post jam update #2

Hi, there's a new version of Cavedude. It implements a number of the fixes and new features that were added in the half-sequel Cavedude EX. The new features are as follows:

• Game now autosaves. Saves can be loaded upon opening the game.
• Reworked the timer. It will now pause while the game is paused (pausing also now has a cooldown to prevent this from being abused)
• Fullscreen can now be enabled by pressing ALT+ENTER or F4
• Fixed more instances where you could stand/regain your jump on spikes