* Fix for issue #82 - Nested loops
I made the following changes in renderer.hpp
- Removed the member LoopLevel::it - it was not being used and was
causing issues.
- Added LoopLevel::loop_type with a matching enum class to mark the loop
as looping on either a Map or an Array. This was to replace the hard to
understand test for key_name.empty().
- Modified update_loop_data to get the correct data for map type loops
when copying in outer loop control data.
- Modified update_loop_data to only copy in the outer loop data during
StartLoop, it does not need to be done at EndLoop and can be expensive
since it can copy a large part of the json tree.
All the tests pass and the test cases from the issue also now work. Both
GCC and Clang will compile and run the tests with no issue. No issue is
seen with address_sanitizer in either compiler.
* Remove forgotten debugging code.
* Fix for issue #80
When updating the `opening_chars`, line_statment was forgotten. So, a
change to any of the openers would cause line statements to start being
unrecognized.
I added a unit test to cover this case.
* fix indentation
* add update to single_include
