v0.4.33

Added

• (fs) statfs without an allocator, on every driver and generically

Added

• (fs) Volume::statfs on the allocator-free FAT, exFAT and littlefs
  drivers, and on the fs::volume::Volume trait (so on AnyVolume too):
  capacity in statfs shape — the allocation unit (cluster or erase block),
  how many there are and how many are free, and the longest name. It
  answers with the same fs::StatFs the hosted Filesystem::statfs does,
  which is now compiled in every configuration, not only with alloc, and
  gains total_bytes / free_bytes / avail_bytes. The counts agree with
  what fsck.vfat and dump.exfat work out from the volume, and with
  littlefs's own traversal through littlefs-python. The trait method is
  provided — derived from total_bytes / free_bytes in 512-byte units —
  so an implementation written against 0.4.32 still compiles.

Changed

• (fs) StatFs derives PartialEq and Eq.