pothos-widgets: keep log10 input within domain
pothos-gui: fix for EvalGraphBlock -- non critical change
pothos-library: set active first so activate() sees isActive()
pothos-gui: GraphObject uses contextMenuEvent
pothos-gui: widget size grip always visible when selected
Merge branch 'master' into fir_utils
pothos-blocks: added complex FIR taps, band rejects