Bump the version to 0.3.0

Seulgi Kim · Seulgi Kim · commit e004199efeaf · 2020-01-29T11:07:18.000+09:00
It adds a cache to the trie.
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "merkle-trie"
-version = "0.2.0"
+version = "0.3.0"
 authors = ["CodeChain Team <codechain@codechain.io>"]
 repository = "http://github.com/CodeChain-io/rust-merkle-trie"
 license = "AGPL-3.0"
