coercing GStrings into Strings in support of a fix for issue 28.
Merge pull request #30 from phasebash/1.7

coercing GStrings into Strings in support of a fix for issue 28.
Bumped up version number.
Upgrade to Wrapper 1.7, fixed deprecation and compatibility issues. Improved tasks by significant refactoring.
Changed Groovy configuration to compile.
Some more task simplifications.
Testing old vs. new Groovy configuration.