Add myself (and some commentary) to README.md
Don't shadow the globals builtin
Start of the template engine chapter
Remove unused attribute
Check that names are valid before using them
A more compact way to write syntax error tests
Minor changes
More text
Using cog to include the code in the chapter.
Fix conflict in README.md
Make public/private clearer; add a check for bad loop var name
Use our own exception for a syntax error
More writing
More error checking
More power in extracting source code
More writing
Oops, didn't mean to remove this
Rearrange to make the story better
Use callable, it's nicer
More writing