hexo-mermaid-lastest

• All Hexo Mermaid packages are outdated. I referred to the latest Mermaid documentation and made some modifications to the hexo-filter-mermaid-diagrams-v plugin. The code is simple and easy to understand.

• Install npm i hexo-mermaid-lastest

• Use mermaid code blocks in markdown files

   ```mermaid
   flowchart LR
   	A --> B
   ```