v0.5.0

If you have already installed Big Sur successfully using a previous version of Big Sur Micropatcher, you do not need to update immediately, but I would suggest updating the patcher before upgrading to any future Big Sur betas or releases.

• unpatch-kexts.sh has been replaced by a -u option for patch-kexts.sh. This way, the unpatching can now reuse as much of the patching code as possible. As a neat effect of the increased code reuse, kext unpatching no longer requires booting from the installer USB first.
• patch-kexts.sh now automatically detects whether the Mac has an 802.11ac WiFi card and, if so, skips installation of the WiFi patch. Thanks to Ausdauersportler for creating the initial implementation of this feature. (My implementation of this feature is not 100% identical, but it is highly similar and based on Ausdauersportler's.)
• patch-kexts.sh has undergone some code refactoring. In the process, error checking was improved considerably and several minor bugs were fixed.
• A patch-kexts.sh bug has been fixed that could, under some circumstances, cause kernel panics during boot on Big Sur beta 10 (and probably subsequent releases) on 2011 or earlier Macs. (As a side effect, LegacyUSBInjector.kext may no longer work properly on beta 4-9. However, it works on beta 10.)
• LegacyUSBInjector.kext has been updated to account for a USB-related kernel change that happened in Big Sur beta 3.
• The README has been updated.