* proof on child trie
* higher level api for child storage proof
* boilerplate for proof from light fetch
* actually check proof on light fetch
* Do not break former encoding
* tabify
* tabify2
* Add child trie root tx to full_storage_root transaction.
* Shorten long lines.
* Temp rename for audit
* Make full_storage a trait method
* Name back and replace some code with full_storage where it looks fine.
* fix indentations, remove unused import
* flush child root to top when calculated
* impl +1