Update getting closer. Added more features!

Hi! I have almost completed implementing everything I planned for the update! I'm mostly doing polishing, testing and graphical improvements now, along with a few more levels. 

**Some of what you see below is a work in progress!** :-)

The new stuff:

Explosive tiles that can chain react, and a new populated tile - "Metropolis", with a Max Corruption Level of 6.

Note that this is an extreme case, just for showcasing this new feature.

A new feature that alters the way the player can select the tiles around it.

A new, stronger type of Xenospore that infects only connected tiles in range.

"Safe Islands" - tiles that the player saved become greyed-out and are inactive.

The player will no longer need to manually destroy populated tiles. In a hindsight this was totally against the goal of the game, which is, saving, not killing! Populated tiles now get destroyed when the indestructible Spore Arms spawn next to them!

More meaningful decisions. In this case, an "amplifer" tile that can protect nearby populated tiles.

Thanks for reading! If this looks interesting to you, be sure to check the current version of Xenospore!