Wolfvak/changes.txt

## changes.txt
new features:
- added touchscreen and circlepad support: cpad behaves the same as the dpad and the touchscreen is used by the swkbd
- turns off the LCD whenever the shell is closed (and turns it on when the shell is opened)
- starts flashing the notification LED whenever it expects input and the shell is closed
- touchscreen calibration is performed automagically with the data provided by the user on initial 3DS boot
- added a software keyboard for text input

performance optimizations:
- basically a complete rewrite of the ARM11 binary used, now it performs a ton of tasks in the background, giving more CPU time for the ARM9
- HID latencies have been removed from the ARM9 (faster response)
- framebuffers are now RGB565, leads to only being able to display 64K colors at once but greatly improves performance by having every read/write operation be a single 16bit read/write, instead of 3 8bit read/writes. also greatly simplifies pointer arithmetic. also only consumes 2/3rds of the memory used for bitmaps.
- enabled write buffering for VRAM, leading to more speed
- rewrote a couple of algorithms used by the UI code, noticed improvements up to 75%
- reverted to pure ARM code compiled with Os
- removed dead floating point code used by lodepng
- instead of bundling the same CRC32 table and functions twice, lodepng now uses the preexisting functions
- rewrote exception handling code to be smaller, faster and simpler, and actually do pointer checking on dumps
- any NULL pointer accesses will now trigger aborts instead of read through ITCM

probably forgetting some other minor stuff
	new features:
	- added touchscreen and circlepad support: cpad behaves the same as the dpad and the touchscreen is used by the swkbd
	- turns off the LCD whenever the shell is closed (and turns it on when the shell is opened)
	- starts flashing the notification LED whenever it expects input and the shell is closed
	- touchscreen calibration is performed automagically with the data provided by the user on initial 3DS boot
	- added a software keyboard for text input

	performance optimizations:
	- basically a complete rewrite of the ARM11 binary used, now it performs a ton of tasks in the background, giving more CPU time for the ARM9
	- HID latencies have been removed from the ARM9 (faster response)
	- framebuffers are now RGB565, leads to only being able to display 64K colors at once but greatly improves performance by having every read/write operation be a single 16bit read/write, instead of 3 8bit read/writes. also greatly simplifies pointer arithmetic. also only consumes 2/3rds of the memory used for bitmaps.
	- enabled write buffering for VRAM, leading to more speed
	- rewrote a couple of algorithms used by the UI code, noticed improvements up to 75%
	- reverted to pure ARM code compiled with Os
	- removed dead floating point code used by lodepng
	- instead of bundling the same CRC32 table and functions twice, lodepng now uses the preexisting functions
	- rewrote exception handling code to be smaller, faster and simpler, and actually do pointer checking on dumps
	- any NULL pointer accesses will now trigger aborts instead of read through ITCM

	probably forgetting some other minor stuff