Create class with all library methods to read/write VoxelMatrix files.
Read VoxelMatrix files using new library method.
Convert to VoxelMatrix files using new library method.
Batch-read VoxelMatrix files using new library method.
Read VoxelMatrix files using new library method.
Move writing methods to library class VoxelMatrixIO.
Move reading methods to library class VoxelMatrixIO.
Read VoxelMatrix files using new library method.
Convert VoxelMatrix files using new library method and remove now useless methods.
Comment debug messages.
Remove unused code.
Make the voxel matrix reader plugin remember the last directory.
Merge branch 'master' into modularize

Conflicts:
	src/main/java/inra/ijpb/voxelmatrix/Segmentation_Checker.java
Merge pull request #1 from jarpon/modularize

Modularize