Added a test for pkg.next
Now .send, .json, and .push will convert things to strings
Made .attachModule more forgiving
Now can attach modules to current module or new module
Added an express-like .use()
Integrated .use with the main module
Expanded a test to include tests for .use()
Made .attachModule accept a basepath and module without any config
Made next-and-uses test run all 3 tests
Added a test to see if mergeUses works
Fixed next-and-uses test
Fixed main module to work with .use