atkAudio Plugin 0.26.1

add output delay to Device IO
improve internal buffering

fix buffering regression
fix update checker

fix macOS UI

fix Linux / UI regression
improve Plugin Host init/cleanup
fix update checker

improve shutdown/cleanup

fix: minor UI tweaks

fix Plugin Host2 OBS Source Node localization and add options to follow source volume and/or mute

fix: plugin host2 obs output node bug

Fix Device Io state restore.
Add Plugin Host2 internal Gain Plugin with Midi control.

add portable install files