* gr_ofdm_sampler
* size params for the graphical sinks
* callbacks for set average on fft, waterfall, number sinks
+* add units to params: Sps, Hz, dB...
+* add bool type to command line option store_true or store_false
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# Features
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* extract category from doxygen
+ * fix up block tree to mirror current doxygen group
+ * remove blocks in block tree covered by doxygen
* param editor, expand entry boxes in focus
* change param dialog to panel within main window
* search for blocks in category window
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# Problems
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+* msg ports dont work with virtual connections
+ * dont fix this until pmts are used?
* hier block generation
* auto generate hier library on changes
* auto clean hier library when block removed
* dont generate py files in saved flowgraph dir
* save/restore cwd
* threads dont die on exit in probe and variable sink
-* overloaded gui classes for each platform, move param input objects into overloaded
* align param titles in paramsdialog
* better error for blank string params
* weird grid params misbehaving