bug fixes, new stuff etc.
last pull request had major flaws which broke lots of things. rolled back to here, and fixed bugs
moved plugin directory to (user.home)/paint-java/plugins/
re-fixed paintbrush slider bug
minor fixes
added hex-colour code input
fixed focus bug
Started to implement Multi-File-Format support.
Finished Multi-Format exporting system!
Merge pull request #7 from Longor1996/master

Multi-Format Exporting System
updated build
Lots of changes.

::
- Added custom ImageImporter system.
- Moved ImageExporter into the correct package.
- Added UnsafeTroughReflectionHelper utility class.
- Fixed a bunch of bugs and architecture mistakes.
(Fixed mistake in the BIN-exporters description!)
Implemented a small TGA exporter with some help.

(Help = Google)
(another formatting fix)
Completed the PaintBrush.

You can now set the size of the brush, and the brush will actually make
use of the size.
Implemented Noise ImageOp.
Noise Effects added.
Added ImageImporter for the BIN format.
Fixed a FATAL mistake in the image loading code!