pothos-blocks: created stream snooper to be base of widget displays
pothos-widgets: work on hier-wrapper for Periodigram
pothos-library: recursive option for Topology disconnectAll
pothos-library: provided name for dot markup when empty
pothos-widgets: connect snooper into Periodogram
pothos-library: add recursive topology flow squash
pothos-blocks: snooper append uses exact size specified
pothos-widgets: reimplement PeriodogramWork for snooper
pothos-util: set arbitrary property on block eval
pothos-gui: move graph widget env force to BlockEval
pothos-widgets: support for remoteEnv key in Periodigram
pothos-widgets: remote snooper for spectrogram
pothos-widgets: remote snooper for wave monitor
pothos-widgets: wave monitor late installLegend
Merge branch 'widget_hier'