Release 0.5.2 including optical flow implementation and arm7 support.

update properties for release

version 0.5.0

tagging new 0.4.5 release

tagging now-archived release version

fix processing core path

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'