unicode in labels

[Dimouse]

It seems that unicode is still not fully supported:(
I didn't manage to add neither ndash; nor mdash; and similar utf chars:( And this is very much needed actually.

Uncaught Error: Parse error on line 2:
...s à Hercule. 1878 "–"] --- 4206(ddd)
-----------------------^
Expecting 'SEMI', 'NEWLINE', 'SPACE', 'EOF', 'GRAPH', 'DIR', 'TAGEND', 'TAGSTART', 'UP', 'DOWN', 'subgraph', 'end', 'SQE', 'PE', '-)', 'DIAMOND_STOP', 'MINUS', '--', 'ARROW_POINT', 'ARROW_CIRCLE', 'ARROW_CROSS', 'ARROW_OPEN', 'DOTTED_ARROW_POINT', 'DOTTED_ARROW_CIRCLE', 'DOTTED_ARROW_CROSS', 'DOTTED_ARROW_OPEN', '==', 'THICK_ARROW_POINT', 'THICK_ARROW_CIRCLE', 'THICK_ARROW_CROSS', 'THICK_ARROW_OPEN', 'PIPE', 'STYLE', 'LINKSTYLE', 'CLASSDEF', 'CLASS', 'CLICK', 'DEFAULT', 'NUM', 'PCT', 'COMMA', 'ALPHA', 'COLON', 'BRKT', 'DOT', 'PUNCTUATION', 'UNICODE_TEXT', 'PLUS', 'EQUALS', 'MULT', got 'STR'
at Tt.parseError (mermaid.min.js:1)
at Tt.parse (mermaid.min.js:1)
at V (mermaid.min.js:11)
at Object.render (mermaid.min.js:11)
at a (mermaid.min.js:18)
at Object.init (mermaid.min.js:18)
at Be (mermaid.min.js:11)
at mermaid.min.js:15

@knsv
Doesn't work for:
graph TD;
A(भीष्म)-->B;

Originally posted by @Suresh-Subedi in #9 (comment)

[Dimouse]

I am sorry. Taking label in quotes [""] fixes this.