switching headers to env + few new fns

two-pixel despike has threshold to keep infrmation in normal noise

avoid the CLCnm annotation error

no blurring for SE images

white text over TIFF image is now preserved

another example

rm printouts

review

documentation

cleanup in PNIP functions and modules

consistent module naming and windows-friendly error reporst

error catching and input file and config handling

code indented and enabled persistent traceback on windows

small tweaks and unicode fix

ipython magic for Spyder users