Modify TestDriver to take resource paths instead of Files
Tested in chisel3:new_unit_tester
Tested in chisel-tutorial:chisel3prep

Fix Counter doc

Refactor tests to use stop() and assert() instead of io.error/io.done

Gate assert, printf, stop by reset
Fix testbenches that never worked
Change simulation prints to display cycle at which test was signaled to end, not when simulator stops
Better documentation for Counter

Add stop() in BasicTester as a replacement for io.done

Add support for printf and asserts, add testbench for asserts and printf

Add Option support in Bundle

Refactor test code generation, add support for additional .v files

Split internal and FIRRTL packages

More design rationale for Vec

Further testing improvements

Fix new style errors

Style fixes for test code

Testing improvements fixing 4 broken tests and reducing runtime

In addition to removing all the extraneous Driver invocations that created various top-level Parameters instances,
this commit also lays the groundwork for stanza-firrtl/verilator based testing of Modules that extend BasicTester.

The execution-based tests have been updated accordingly. They will only succeed if firrtl and verilator binaries have been installed.
Further work is needed on individual tests to use assertions instead of .io.error.

Add compile and checkstyle make targets.

Add documentation on some non-intuitive parts

Remove implementation details from scaladoc.

You didn't want it, so Imma getting rid of it...