Merge pull request #47 from djpohly/open-read-only

Don't open for writing or hold open while decoding

Merge pull request #45 from djpohly/parser-doc

Update documentation for parser example

Merge pull request #43 from djpohly/transform-ast-type

Merge pull request #44 from djpohly/polish-expr

simplify code

Add parse_source hook and polish_expr example.

Correct type of transform_ast.

Merge pull request #42 from tomkcook/master

Merge branch 'master' of github.com:tomkcook/ideas

Some indentation fixes from testing integration with Transcrypt.

Correct handling of multiple child tags.

More robust unit tests and a new test

Merge pull request #41 from tomkcook/master