Plantuml-markdown

Fix

* Fixed inclusion from `mkdocs-multirepo-plugin` (refs 100) [Michele Tessaro]

Expanded the `base_dir` configuration to handle a list of paths where to
search for files to include.

New

* Added JsonSchema file for MkDocs options validation (refs 98) [Michele Tessaro]

Added a JsonSchema file which may be used with schemas in
[MkDocs-Material](https://squidfunk.github.io/mkdocs-material/) to
validate the `mkdocs.yml` configuration file.

Fix

* Fixed namespace inserted in inline svg. [Michele Tessaro]

* Fixed wrong option name in documentation (fixes 99) [Michele Tessaro]

Fix

* Don't add newlines in included files. [Daum Alexander (DCL ATV SC D RAD CSFW FW)]

New

* `cachedir` is auto-created if missing (implements 96) [Michele Tessaro]

Changes

* Updated changelog. [Michele Tessaro]

Fix

* Fixed caching with png diagrams without hyperlinks (fixes 27) [Michele Tessaro]

Changes

* Updated the CHANGELOG.md. [Michele Tessaro]

Other

* Change packaging style to avoid having to do copying on installation. [Paul Harrison]

the package registers itself as an extension from its pip installed location