Pandoc filter which converts PlantUML code blocks to PlantUML images.

```plantuml
Alice -> Bob: Authentication Request
Bob --> Alice: Authentication Response

Alice -> Bob: Another authentication Request
Alice <-- Bob: another authentication Response
```

Install it with pip:

pip install pandoc-plantuml-filter

And use it like any other pandoc filter:

pandoc tests/sample.md -o sample.pdf --filter pandoc-plantuml

The PlantUML binary must be in your $PATH or can be set with the PLANTUML_BIN environment variable.

There are a few other filters trying to convert PlantUML code blocks however they all failed for me.