Log Message:
Changes 14.4.0:
* File formats:
  o Mention in man pages that WAV files support floating point encodings.
  o Add support for floating point encodings in AIFF-C files. (Ulrich Klauer)
  o Pad WAV data chunk to an even number of bytes (as required by the
    specification). [3203418] (Ulrich Klauer)
  o Add optional MP2 write support with twolame library. (Paul Kelly)

* Audio device drivers:
  o Give pulseaudio driver higher priority than alsa or oss now that
    its proven stable and gives user more features; such as per app
    volume control. (cbagwell)
  o Fix bug when specifying OSX coreaudio device name.  Would only
    search for first 3 devices. (cbagwell)
  o Fix sox hangups are exit when using coreaudio. (cbagwell)
  o Improve buffering in coreaudio driver (Michael Chen)
  o Support enabling play/rec mode when user invokes sox as either
    play or play.exe on windows. (cbagwell)
  o Fix compile of sunaudio driver on OpenBSD (cbagwell)

* Effects:
  o Improvements to man pages for tempo effect.  Really made in 14.3.2.
    (Jim Harkins).
  o New upsample effect. (robs)
  o Fix to effects pipeline to let fade effect specify time from end of
    file again. (cbagwell and Thor Andreassen)
  o Fix man page default error for splice effect. (Ulrich Klauer)
  o Enable support for --plot option on biquad and fir effects. (Ulrich Klauer)
  o Effects chain can now be unlimited in length. (Ulrich Klauer)
  o Fix newfile/restart effects when merging or mixing files. (Ulrich Klauer)
  o Fix crashes in compand and mcompand effects. [3420893] (Ulrich Klauer)
  o Let the delay effect gracefully handle the special case that a delay can
    be more than the input length. [3055399] (Ulrich Klauer)
  o New hilbert and downsample effects. (Ulrich Klauer)
  o Fix problem where fade would sometimes fail if specifying a fade-out
    immediately after a fade-in. (robs)
  o Stricter syntax checking for several effects