v0.2.1

• upgrade gguf, ggml, tokenizers-cpp
• refactor bert graph build (easy to read and modify)
• new ggml api usage

v0.1.0

Though v0.1.0, it is a alpha version with features as bellow.

• build with tokenizers-cpp (a cpp binding for rust code) for tokenizer
  • support token normalize
  • support CJK and so on
• use gguf format
  • support special token
  • support eps