Improve arrows about mermaid HOT 7 CLOSED

Different arrows are part of the plan. Was thinking about other symbols then arrow heads like circles and maybe a cross. This could into that work.

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I think by default all arrows should be "normal" as in here: http://www.graphviz.org/doc/info/arrows.html

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The parsing supports --o as well but there are no rendering for that yet so when the arrows are overlooked, the arrow ending in a dot should also be included and maybe a --x as well.

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Along those lines, is there support for double-headed arrows? This would be useful for indicating bidirectional relationships, and would also avoid cluttering up the graph with two arrows.

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Yes I can see the point with that. The obvious syntax will not work though <-> will be interpreted as a tag by the browser.

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I will close this issue and open a new issue for double headed arrows. I hope that is ok.

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Yeah. A specific issue is easier to keep track of.

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