v0.0.1-alpha.7

• error message

v0.0.1-alpha.6

• expose kv storage interfaces

v0.0.1-alpha.5

• use transaction interface to protect trie

v0.0.1-alpha.4

feat: protect get with lock
feat: remove nodes which are not referred after update

v0.0.1-alpha.3

feat: add delete operation
feat: add batch for compose a set of operations
refactor: reorganize module architecture

v0.0.1-alpha.2

refactor: reorganized module

v0.0.1-alpha.1

feat: put new function to the top level of the module