4.5.1

CHANGES:

• BREAKING: remove ~name parameter from Mirage.Runtime_args.create
  (#1541 @samoht, fixes #1532)
• BREAKING: remove ~name parameter from Mirage.runtime_arg, and use a
  string (instead of a format string) as third parameter (#1541 @samoht)
• constrain the start function to unit Lwt.t. Previously, there was no
  restrictions, and lots of time was spent in debugging when a unikernel
  resulted in unit Lwt.t Lwt.t (@Julow #1524)
• revise man page sections and ordering: ARGUMENTS, OPTIONAL, NETWORK OPTIONS,
  DISK OPTIONS, LOG AND MONITORING OPTIONS, OCAML RUNTIME OPTIONS. Previously,
  the ARGUMENTS and OPTIONS were put later, and were hard to find. These are
  the sections where unikernel-specific arguments are put by default
  (#1531 @hannesm @reynir)
• add --net=host and --net=ocaml to reduce confusion. --net=host uses the
  TCP/IP socket stack, --net=ocaml the OCaml network stack (#1525 @hannesm)
• quote Runtime_arg.call (#1522 @Julow)
• documentation fixes (inline examples @Julow #1523, @hannesm #1537 (fixes
  #1512 reported by @reynir), Runtime_args.create #1541 @samoht)
• fix the build instructions of the generated opam file: since 4.5.0
  mirage build is no longer available, use make "build" (#1527 @hannesm)
• add RELEASE.md, a guide on how to cut a mirage release (#1519 @samoht)
• allow git 3.16 (#1536 @hannesm)
• use mirage-bootvar (using dune variant) instead of parse-argv and
  mirage-bootvar-xen, mirage-bootvar-solo5, mirage-bootvar-unix
  (#1533 @hannesm)
• BUGFIX: reset the lexer location before applying functors in generated code
  (#1539 @samoht, fixes #1520 @hannesm)
• BUGFIX: fix off-by-one locations for mirage/main.ml (#1540 @samoht, fixes
  #1528 @hannesm)