[doc] update modifying helpers
[doc] merge modifying_helpers into other
[doc] prepare doc to talk about proxy lists
[doc] expose problem the proxy lists is trying to solve
[doc] describe proxy list solution
[mod] update TODO
[doc] add warning about current unwatched state of node_list
[mod] update TODO
[doc] start to write basic usage for proxy list
[doc] document every method of proxy list by showing examples
[doc] talk about .node_list
[doc] talk about omitting .value
[doc] add section for CommaProxyList
[doc] same for DotProxyList
[doc] remove out of nowhere bad copypasta