[ANN] dtas 0.19.0 - duct tape audio suite for *nix

Free Software command-line tools for audio playback, mastering, and
whatever else related to audio. dtas follows the worse-is-better
philosophy and acts as duct tape to combine existing command-line tools
for flexibility and ease-of-development. dtas is currently implemented
in Ruby (and some embedded shell), but may use other languages in the
future.

Changes:

    dtas 0.19.0 - odd pathname fixes

    Non-UTF-8-encoded pathnames now handled properly by dtas-mlib.
    Shell-unfriendly filenames are handled properly if they require
    ffmpeg (they were always handled properly when using sox).

    Some minor URL and doc updates, too, and there's a new
    "make symlink-install" target for users who lack permissions
    to install RubyGems.

    6 changes since v0.18.1 (2021-02-13):

          mlib: pathnames may be blobs
          README: replace NNTP URL with NNTPS
          gemspec: allow building gem without setting VERSION
          build: add "symlink-install" target
          do not shell-quote filenames for environment
          doc: use Tor v3 .onion URLs

* homepage: Index of /dtas/
* https://80x24.org/dtas/INSTALL
* https://80x24.org/dtas/dtas-player.txt
* dtas news
* git clone dtas.git - duct tape audio suite for *nix
* dtas-all@nongnu.org (plain-text only, no HTML mail, please)
* mail archives: everything related to duct tape audio suite (dtas)
  nntps://news.public-inbox.org/inbox.comp.audio.dtas
  imaps://anon:mous@public-inbox.org/inbox.comp.audio.dtas.0
  nntp://7fh6tueqddpjyxjmgtdiueylzoqt6pt7hec3pukyptlmohoowvhde4yd.onion/inbox.comp.audio.dtas
  imap://anon:mous@7fh6tueqddpjyxjmgtdiueylzoqt6pt7hec3pukyptlmohoowvhde4yd.onion/inbox.comp.audio.dtas.0
  everything related to duct tape audio suite (dtas)

note: .onion URLs require Tor: <https://www.torproject.org/>