Update a029 is live!

This update adds a new mode, survival. It still needs some work in the graphical/UI department, but fundamentally it works. 

It also adds new cursors, for when you are building, attacking etc. 

Oh yeah and a completely new behavior for airships. Now, all airships will move to fight other airships. They will avoid going through their targets (mostly) and instead keep a bit of distance and fly around them. This goes for islands too, when you set them to attack they will crowd around the island and move around, firing at it. This drastically improves the RTS feel of the game, since now you don't need to micro so much. Airships will also attack while selected so you don't have to keep selecting and deselecting them. 

Conquest is now semi-randomly generated. The island groups are mostly in the same places each time, and the same size, but will differ in resources and enemy structures. Now, you can fight huge enemy outposts and it really feels a lot more like an RTS.

As much as I would like to call it a030, I'm holding back until a bit more code cleaning can be done. The next update will probably be for polishing up the features already in the game and making it more of a playable game. This means there might be a pretty big jump to something like a040 or higher, considering how much content is in the game since a020.

additions

- conquest now randomly generated
 - survival mode (original is now 'sandbox' with no waves)
 - new behavior for airships now smarter and less dumb, also more intelligent and not as stupid
 - can set airships to STOP (S) or GUARD (G) to stop them reacting to enemies
 - does anyone read these?
 - cursor sprites which change based on what you hover over

fixes

- some code refactoring (still needs a lot more) mainly on island spawning, so there's more control

known bugs

 - enemy islands can spawn super close to you and blow your stuff up (rare)