Hey PICO-8 people! Builds for 0.1.12 are now live on Lexaloffle and Humble. UPDATE: PocketCHIP users can get it here.
If you just want to see what's new, please scroll down a bit. But first of all, I should issue a..
Breakage Warning!
Future Compatibility: You'll need to update to 0.1.12 to play cartridges made in 0.1.12 or later. This update is another attempt at eternal future compatibility (can handle any future carts). There were a few bugs in 0.1.11g that needed a cart version bump to fix, and so I also took the chance to tweak the API (more on that below).
Backwards Compatibility: The time() function (also aliased as t() for tweetjammers) now always means time in seconds even at 60fps. This breaks a couple of 60fps carts that I know of (sorry @rez and @jobe!) but I think it's worth biting the bullet now to be more consistent and to match Voxatron's t() behaviour. With any luck this will also be the last backwards compatibility breakage.
A less disruptive change is in the music mixer: both the drop (3) and vibrato (2) effects are observed when playing an SFX-instrument. This only affects carts using SFX instruments, and which happen to have those (previously) dormant values sitting around, but I couldn't find any examples in the wild yet.
Unlimited Undo

The gfx, map and audio editors now have unlimited undo stack. Unlike the code editor which has one undo stack per tab, the other undo stacks are global to the cartridge. It also works during audio playback, so it's possible to make a bunch of changes to various SFX andor song patterns, and then roll the changes back and forth while it is playing.
#INCLUDE
As well as diving code into tabs, it's now also possible to insert code from external text files each time a cartridge is run. This is particularly useful when using an external text editor (no need to modify the .p8 file directly), and also to share code across cartridges while still being able to modify it in one place. Note tha