v0.7.0-jdk8

• a jdk8 build of version 0.7.0

v0.7.0

• added multithreading
• added a builder to simplify constructing Dlx instances

v0.6.1-jdk8

• a jdk8 build of version 0.6.1

v0.6.1

• allow every constraint to be secondary by using different constructor

v0.6.0

• Added statistics
• Allow solving generalized exact cover problems

v0.5.0

Initial working version