Reduce JDK requirement to JavaSE-1.6
Merge pull request #135 from igemsoftware/Branch-chyb

Reduce JDK requirement to JavaSE-1.6
DeWarning finished~ HiaHiaHia~
Merge pull request #139 from igemsoftware/Branch-chyb

DeWarning finished~ HiaHiaHia~
Merge pull request #137 from igemsoftware/master

Master into Cao