Added a proper get_chunk function to get all the blocks in a nice structure

The old get_chunk function is now get_raw_chunk, the analyze_chunk program
is also updated to use this new get_chunk format now.

Signed-off-by: Toon Schoenmakers <nighteyes1993@gmail.com>
I forgot about Podzol :(

Signed-off-by: Toon Schoenmakers <nighteyes1993@gmail.com>