Raising the JUnit version
Adding test directory
Adding gitignore for maven target directory
Added xmlunit for doing XML document comparisons

- Moved XSLT to resources directory
Adding a test input and output
Set xmlunit dependency to current stable (1.5)

- Deleted misnamed `TransformTest` file
Added framework for tests for stylesheets

- Added a `doTransformation` signature in Transform.java
- renamed reg+interp.xml.out for use with TransformTest
Added test outputs for line numbers and html
Extracted test utils and getResource*

- Made a new test file specifically for testing `Transform`
- Added tests for 'piping' of transformations to `Transform`
Added 'piping' of transformations to `Transform`
Adding test of TEI->HTML transform
Whitespace adjustment

- Re-enabled an exception in the Transform error listener