-Kernel source tree and headers are now included in the image!
-The kernel build source tree is located at rpi-linux-"${KERNEL_VERSION}"
-Ubuntu's first official release has come for the Pi 4 but it's 19.10 only which is not a LTS release and support ends for it in
-DKMS module building tested (you can test using apt install hello-dkms)
-If you want custom kernel flags you can go to the /usr/src/rpi-linux folder and run make menuconfig (see BuildPiKernel64bit.sh for more info)
-Rewrote build script to be more readable and reliable. It's still a work in progress but I'm breaking things down into functions, etc.