2.18

CHANGES:

Changes:

• Add support for ARM64 (Bastian Eicher).

• Add + to list of allowed characters in "extract" (Bastian Eicher, #185).

Bug fixes:

• Don't abort if chmod of launcher directory fails.
  We try to make the directory read-only, but this isn't very important.
  It can sometimes fail if running inside a sandbox that prevents modifications to the filesystem.

• Handle implementations that directly conflict with themselves (#180).

• Improve SIGPIPE handling (#162).
  Disable the SIGPIPE signal, so that we handle it as an exception instead, not by killing the process.

Updates for upstream changes:

• Make compatible with Yojson json type deprecation (Marek Kubica).
  Yojson 2.0 removes the json type, so this code switches to using t.

• Replace uses of deprecated Stdlib.Stream and Lwt_unix.yield.

• Fix new compiler warnings from OCaml 4.12 and 4.13.

• Update .NET Framework detection logic (Bastian Eicher, #178).

• Simplify GUI build using dune's new plugin support (#161).

• Move feed to apps.0install.net (Bastian Eicher).