v0.5.0-beta5

Changes since beta 4

New features:

• Improve validation of filters.
• Setting to enable retry on reads from Alsa capture devices.
• Avoid blocking reads on Alsa capture devices (helps avoiding driver bugs for some devices).

Bugfixes:

• Fix panic when reloading config if a new filter was defined but not added to the pipeline.
• Check for mixer parameter changes when reloading config.
• Token substutution and overrides also work via websocket.
• Don't exit on SIGHUP when waiting for a config.
• Fix handling of negative values when reading filter coeffs in S24LE3 format.
• Gain filters react to mute setting on reload.
• Fix noise in output when resampling and muting all channels in mixer.