Resolves#637, resolves#1495.
The syntax for edges is extended to allow for extra
dashes/equals signs/dots (depending on the edge type). Each added
character increases the length of the edge by one rank level, as
follows:
Length | 1 | 2 | 3 |
------------------|:------:|:-------:|:--------:|
Normal | `---` | `----` | `-----` |
Normal with arrow | `-->` | `--->` | `---->` |
Thick | `===` | `====` | `=====` |
Thick with arrow | `==>` | `===>` | `====>` |
Dotted | `-.-` | `-..-` | `-...-` |
Dotted with arrow | `-.->` | `-..->` | `-...->` |
This features leverages the `minlen` property exposed by Dagre which was
not previously available when using Mermaid.
This restores the option of rendering an ERD with an absolute width,
which is consistent with the approach taken with the other diagram
types.
This logic was lost in #1324, which was probably just a small oversight:
9199546dca (diff-7c38d27acbe0676d923bf19283671616L397-L409)
The option defaults to true for backwards compatibility.
This option lets you customise the padding around the whole flowchart.
It is equivalent to `er.diagramPadding` and defaults to 8px for
backwards compatibility with the current hardcoded value.
