added support for SequenceExpression
added support for expectation on line following input

This is a crude implementation, but it works:

    foo();
    // => 'expected result from calling foo()'

Currently this only works if the preceding statement is a single line
updated bin/autodoc so that the -d option works even if there's a failure
fixed duplicate var declaration
added preliminary support for @typedef (see #21)
support Markdown in @typedef descriptions
added a bunch of descriptions to @typedef tags
moved handler templates into handlers/ folder
removed properties heading
small fix for @typedef spec
trivial detail