mousewheel zooming in gviz window

Read .pronsolerc from current directory if not found in home directory 

making macros work on pronterface

refactored reading pronsolerc as separate function, call that from pronterface

Added a short note in the README about another way to put python in 32bit mode for mac

Auto-select text after executing command (so when typing next command it gets overwritten)

Add skeinforge settings option to pronterface menu.
Fix mini window size on a mac.
Make retract option more robust.

Fix direction when reversing the extruder.

trim extraneous newlines from "loud" output