add generation completeness test
update traverse visitor keys to acorn ones
expose traverse.VISITOR_KEYS
remove invalid node types from generator and add todo ones
add blacklist syntax feature checking to 6to5/register
add more feature detection to 6to5/register
split up code generators
just return constructor if only a constructor exists in classes
remove optional computed property in b.memberExpression
add generation tests from escodegen
make CodeGenerators use static method calls instead of recursive string methods
remove comments transformer
run internal transformers when using a whitelist
add comments with estraverse
remove start and end props from nodes in traverse.removeProperties
remove legacy generator options
more descriptive test helper method names
add more type methods
update tests to work with new syntax