Rename embedded-open, embedded-close, etc. to open, close.
A series of performance enhancements and better documentation.
Add Package::express(), which will allow for an express app to do app.engine('egs', egsPackage.express()) and retrieve its templates through the package rather than the filesystem.
Make the `h` helper an alias of `html`. Also add `j`/`javascript`, which makes a string able to be placed inside a JS string, e.g. "<%=j text %>"