Notable patches:

- 265a3926 "fuse: Increase MAX_KERNEL_WRITE to 1 MiB & enable CAP_MAX_PAGES"

  this should affect WCFS performance significantly because previously data was
  read from WCFS server in 128KB chunks and now it could be read in 2MB.

  For the reference: WCFS was setting MaxWrite=2MB from the beginning, and
  previously it was capped to 128KB by go-fuse. Now with go-fuse upgrade we
  should hopefully automatically get increase in performance.

- 90b055af "fusermount: Fix option escaping"

  Levin's patch to allow ',' to be present in fsname, so that we can mount
  neo:// with multiple masters.

  See nexedi/wendelin.core!15 for context
  and details.

* master: (45 commits)
  fs: kill subprocess before tearing down test
  fuse/test: Fix TestFopenKeepCache, take 2
  fs: simplify TestReadDirStress
  fuse: tweak Unmount doc comment
  .github: add Go 1.20
  fuse/mount_linux_test/DirectMount: Verify FsName \w comma/backslash works
  fusermount: Fix option escaping
  fuse: fix debug print for FsyncDir
  fuse: print GETATTR flags in input
  fs: document FileHandle argument for Getattr
  README.md: tweak & polish
  Drop "// " from LICENSE
  fs: fix NodeLookuper documentation
  .github: set user_allow_other in /etc/fuse.conf
  .github: drop Go 1.13 / 1.15, add Go 1.18/1.19
  fuse: MountDirect: always pass max_read
  tests: TestDirectMount: better coverage, clearer output
  fs: document Readdir determinism requirement
  fs: fold duplicate fuse.Context{} instantiations
  newunionfs: make readdir deterministic
  ...