Mermaid version used in DiagrammeR

[YangTSY]

A simple question: Does DiagrammeR automatically use the latest Mermaid version?

I was trying to run a simple flowchart in R,

The version in Mermaid Live Editor (version 9.2.2) is here

flowchart LR
    a o--o A
    b <--> B
    c x--x |NA|C

When I copy this code to R,

library(DiagrammeR)

# This doesn't work:
mermaid(
"graph LR
    a o--o A
    b <--> B
    c x--x |NA|C"
)

# This works:
mermaid(
  "graph LR
    a --> A
    b ==> B
    c --> |NA|C"
)

It feels like mermaid() doesn't support some features that are avaliable in mermaid.js.

[rich-iannone]

Closing this in favor of #475.