You may have to delete your main configuration file before updating if you had v3 installed. For some games, you will have to use 222 instead of 223 (RB instruments, GH 5) if you had 222 v3.
If you think you need an external ehcmodule.elf, you can put it in SD:/apps/usbloader_gx/ and it will be loaded.
Fixed crash when setting a custom path using the folder button (issue 864).
Fixed black screen when starting the loader from HBC a long time after powering the Wii and the HDD went to sleep (tested on a WD 2,5") (possible fix for issue 881).
formatted the code to make it easier to read. no functional changes at all.
i didn't put anything from the libwiigui folder or banner folder in the beautifier.
my automated .bat seems to have done a good job. the only places i see it fucked up was on (GXColor){blablabla}. it treated the brackets in the color like all the other brackets and put the color on a new line and indented it. i think i fixed most of them. not sure if it messed up anywhere else. also not sure about how it handled different linebreaks. it looks fine on windows. if it looks messed up on linux, it can be reverted.
the code still compiles and runs fine.