Patch notes 4

I didn't really want to update again before I had something more significant to add but some pretty annoying new bugs turned up. This one also has a new implant you can buy so that's at least a bit more exciting. Work has started on a new bonus level too, it shows up as hidden on the level select screen but there's no way to unlock it yet. Sorry if this causes confusion, it's just annoying to add an exception to hide it.

• Fixed a bug where you could no longer climb stairs after crouching once. (don't ask)

• Fixed screen shader effects getting stuck after leaving the level.

• Fixed civilian slider removing all civilians at every value other than max.

• Added a new purchaseable implant.