v0.0.11

Notable changes:

• Several issues have been addressed in uvwasi_fd_readdir().
  A bug in the copying of the directory entry's name has been fixed.
  The function now returns UVWASI_ENOSYS on Windows and Android.
  Serdes support has been added for uvwasi_dirent_t's.
  (#151)
• The libuv dependency has been updated to v1.39.0.
  (#152)