At the start of a release development cycle, the contents of `next` should be deleted
and replaced with those of `initial`. From the repo root:

    > cd doc
    > rm -r next/*
    > cp -r initial/* next

Then edit `next/1-intro.md` to refer to the next version.

To prepare the release notes for a release, run `golang.org/x/build/cmd/relnote generate`.

	MRS	DCZID_EL0, R21                     // f5003bd5
	MRS	DISR_EL1, R8                       // 28c138d5
	MSR	R5, DISR_EL1                       // 25c118d5
	MRS	DIT, R29                           // bd423bd5
	MSR	R22, DIT                           // b6421bd5
	MRS	DLR_EL0, R25                       // 39453bd5
	MSR	R9, DLR_EL0                        // 29451bd5
	MRS	DSPSR_EL0, R3                      // 03453bd5