update processing compatibility setting in build.properties

correct path of core.jar in build.properties based on @P0ulp's change…

…s as described in atduskgreg#31

The official 0.4 release!

Also, added an unwrapped Hough lines example in prep for wrapping it.

remove remaning references to the term 'buffer'

Start ignoring distribution directory, finally.

Bump to alpha4.
Start using real library.version number for Ellie.

Move dylibs for opencv on mac into macosx folder.

Add ContourComparatour class to support sorting contours by area.x

Add min() and max() functions.

Add BrightestPoint example.

remove extraneous imports from top of HueRangeSelection example