fix multi weirdness while building indices
tiny tydying
comments

commenting index stuff
add contextual exceptions
Merge branch 'feature/better_exceptions'
add query.all_subqueries (returns all subqueries with recursion)
add debug exception output for static query execution command errors
documentation begins
fix typo and clarified documentation stub
some more documentation
documentate!
debug wrong-key problem with clientside redis logging (pipelining still enabled)