network-core 0.7.2 - Fix javadoc

• Remove all the Chinese characters, change into English.
• Fix a small bug when start MultiNioServer.

network-core 0.7.0, network-rpc 0.7.0 - Update dependencies

• Update dependencies of commons-core, commons-seri to 2.2.0
• Update dependencies of Jackson lib to 2.8.2
• Update the target Java version to 1.7

network-rpc 0.6.0 - Fix javadoc problem and make source compatible with Java 8

• Make the source code compatible with the newest commons-core (2.1.3)
• Make the source code compatible with the newest commons-seri (2.0.1)
• Make the source code compatible with the newest network-core (0.6.0)
• Make the test cases more stable.
• Rename some classes to make it more clearer.
• Refiled the converter part and extract common methods to commons-seri.

network-core 0.6.0 - Fix javadoc problem and make source compatible with Java 8

• Code can be compiled with Java 8.
• Code still compatible with Java 6.
• Fixed all the javadoc error & warnings.
• Added test result for stress test.