message: Update CHANGELOG with changes to file I/O handling.
diff: @@ -16,6 +16,15 @@ to 1.0.0 are beta releases.
  - Recipients are now parsed as filenames last instead of first. If a filename
  happens to also be a valid recipient format, the file will be ignored. This
  can be overridden by using an absolute file path.
  +- The filename `-` (hyphen) is now treated as an explicit request to read from
  + standard input or write to standard output when used as an input or output
  + filename.
  +- `-o -` will override protections for terminals when standard output is not
  + being piped elsewhere: output will not be truncated, and binary data will be
  + printed directly to the terminal.
  +- Armored encrypted output can now be printed to the terminal. Large files will
  + be truncated (to protect the terminal), corrupting the encryption. This can be
  + overriden with `-o -`.
  ### Fixed
  - Corrected encoding of example recipients in manpages.
  