v1.9.18

-- Added hmrR_MotionCorrectPCArecurse.m and hmrR_MotionCorrectPCA.m functions to registry of available user functions for proc stream.
-- Added ability to auto update ProcStreamOptionsGUI when proc stream changes in procStreamGUI
-- Modified ProcStreamOptionsGUI to adjust position if it goes outside screen boundaries when it gets updated due to a change in the proc stream.
-- Improved the robustness of user functions which use tIncMan/tInAuto and mlActMan/mlActAuto arguments by making uniform intializations which accounts for any situations with empty matrices.
-- Improved unit test clean up of any unclosed file descriptors.
-- Fix a few bugs in adding and reloading user functions in the function registry