This version includes bug fixes and improvements to the contour operation and the disk-based tile cache classes:
- Andrea Aime fixed a long standing problem where the contour operation was returning spurious lines within regions of equal elevation. Andrea also made significant improvements to the running time of the operation.
- Tobias Warneke fixed a problem involving affine transforms in the DiskMemImageGraphics class, and made the tile cache code more robust for use on fast computers.
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