go1.26rc1
doc/next: clean up some Go 1.26 release notes
doc: initialize next directory for Go 1.24
doc, cmd/internal/obj/riscv: document the riscv64 assembler
doc: fix typo in go memory model doc
spec: remove restriction on channel element types for close built-in (bug fix)
doc: pre-announce removal of gotypesalias and asynctimerchan GODEBUG flags