Merkle Patricia Trie (MPT)

This program is the implementation of MPT in GoLang.
All the inforamtion bases on the Etherum Patricia Tree: https://github.com/ethereum/wiki/wiki/Patricia-Tree .
This program will have 5 main function:

1. Compact_encode(hex_array) -> hex_array
2. Compact_decode(hex_array) -> hex_array
3. Get(key) -> value
4. Insert(key, value)
5. Delete(key)