make sure that bock_of includes itself.
add another child_of check.
make children_of search recursively by default.
fix siblings_of method.
create a parents_of method.
simplify the children_of method muchly.
remove debug info.
fix finding children when there are multiple nests.
simplify children_of method even more.
create the block_of method.
refactor block_of method.
shorten is_parent? method.
start a sorter class.
create a size method.
add some checks for dictionary sorting.
change the order of some methods.
add a formatter module.
remove some debug info.
create a to_a method.
move indentations into it's own class.