Add Unix domain socket connectivity (resolves #10)

Fix: too frequent reconnection attempts (resolves #9)

ci: fix Xvfb command redirection

Use Go reflection to bind widgets in Builder (also resolves #3)

docs: README screenshot update

docs: screenshot update, move screenshot out of repo

Make all used icons symbolic

Minor UI changes; labels in Preferences | columns

add queue filter function

UI tweaks

ci: add auto deployment using goreleaser