Update graphviz requirement from <0.18,>=0.14 to >=0.14,<0.19

Updates the requirements on graphviz to permit the latest version.

Changelog

Version 0.18

Change of beaviour: File endings are now normalized so that all DOT source outputs end with a final newline (Unix convention, simplifies concatenation). This includes DOT source files written by .render(), .view(), or .save() as well was .source generated or loaded from Source (or Source.from_file()).

Change of behaviour: Source instances created by Source.from_file() no nonger write the content read into .source back into the file. Use .save(skip_existing=False) before calling .render() or .view() if you want to overwrite the file to produce the previous (less safe) behaviour.

Change of undocumented behaviour: When iterating over a Graph, Digraph, or Source instance, the yielded lines now include a final newline ('\n'). This mimics iteration over file object lines in text mode.

When passing invalid parameters such as unknown engine, format, etc., .render() now raises early before writing the file. Call .save() explicitly to produce the previous (less safe) behaiour.

Add optional keyword-only encoding argument to pipe(). Returns the decoded stdout from the rendering process (e.g. format='svg'). Delegates encoding/decoding to subprocess in the common case (input and output encoding are the same, e.g. default encoding='utf-8'). Used by the Jupyter notebook integration.

Add optional keyword-only engine argument to .pipe() and .render().

Add optional keyword-only renderer and formatter arguments to Graph(), Digraph(), Source() and Source.from_file() to set default renderers and formatters (similar to format). Used by .pipe(), .render(), and .view() if not given as method-argument.

Add pipe_string(), pipe_lines(), and pipe_lines_string(). Pipe input_string, return string. Pipe input_lines incrementally, return bytes. Pipe input_lines incrementally, return string.

Add set_default_engine() and set_default_format()

Add backend.DOT_BINARY and backend.UNFLATTEN_BINARY.

Restructure the internal class hierarchy using multiple-inheritance with cooperative super() calling:

... (truncated)

Commits

3f43e88 release 0.18
8d1e1c0 turn note into hint
97f34f5 fix wording
57f7ee5 improve caption
a9ce435 improve caption
afa08a8 fix markup
0344dc6 prepare stable binder badge in README.rst
a6b9a97 delegate parameter verification
85b53d4 update online help output and release process
51e4250 improve wording
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kinow / protobuf-uml-diagram

Update graphviz requirement from <0.18,>=0.14 to >=0.14,<0.19 #37

Version 0.18

Codecov Report