Bug fixes
- **filehandler**: Move lockfile into $GITDIR *by Wuestengecko* (b5ec1c02ad26fb09b3b15372948f142136e516de)
- **model**: Fix `AbstractDiagram.nodes` *by ewuerger* (f4fa4c481705bb61f6d32b8782dae66fdc6e0084)
- **model**: Fix default renderability of diagrams *by Wuestengecko* (1ad8659e310ef4f620da52340bce0028605424b7)
Documentation changes
- **model**: Document `_create_diagram` *by Wuestengecko* (815504b223c7a9f29f0d21f87d6bb30c32946c3a)
- **model**: Mark `AbstractDiagram._allow_render` as public *by Wuestengecko* (c492c57fa02767667f7b66a5f73f116941739933)