v0.4-rc1
Use native :numref: macro instead of numsec extension
Trivial: Add SPDX tags to source files
Add note about the initial character in a compatible
Describe "fail" status for /cpus/cpu* nodes
simple-bus: Add nonposted-mmio property
State the 64-bit alignment requirement earlier
Add version to specification text
Add Devicetree logo to html and pdf output
Add an SVG logo
Update Arm copyright years thru 2021
