Maven integration

Converted project to Maven structure, setup Maven Central release.

v1.2

Added PatchBenchmark and argument validation, some bugfixes.

v1.1

Greatly expanded customizability of the algorithms:

• Added min/max chunk sizes
• Added mask generation seed
• Added mask generation technique
• Added setting custom masks
• Added setting a normalization level

Also improved the PatchSummary example.

v1.0

Initial release version.

FastCDC4J is feature-complete.