Support dashes in actor names in sequence diagrams

src/diagrams/sequence/parser/sequenceDiagram.jison

@@ -58,10 +58,10 @@
 "deactivate"                                                    { this.begin('ID'); return 'deactivate'; }
 "title"                                                         return 'title';
 "sequenceDiagram"                                               return 'SD';
-"autonumber" 			                                              return 'autonumber';
+"autonumber" 			                                        return 'autonumber';
 ","                                                             return ',';
 ";"                                                             return 'NL';
-[^\+\->:\n,;]+                                                  { yytext = yytext.trim(); return 'ACTOR'; }
+[^\+\->:\n,;]+((?!(\-x|\-\-x))[\-]*[^\+\->:\n,;]+)*             { yytext = yytext.trim(); return 'ACTOR'; }
 "->>"                                                           return 'SOLID_ARROW';
 "-->>"                                                          return 'DOTTED_ARROW';
 "->"                                                            return 'SOLID_OPEN_ARROW';

src/diagrams/sequence/sequenceDiagram.spec.js

@@ -93,6 +93,23 @@ Bob-->Alice: I am good thanks!`;
     expect(messages[0].from).toBe('Alice');
     expect(messages[1].from).toBe('Bob');
   });
+  it('it should handle dashes in actor names', function() {
+    const str = `
+sequenceDiagram
+Alice-in-Wonderland->Bob:Hello Bob, how are - you?
+Bob-->Alice-in-Wonderland:I am good thanks!`;
+
+    mermaidAPI.parse(str);
+    const actors = parser.yy.getActors();
+    expect(actors["Alice-in-Wonderland"].description).toBe('Alice-in-Wonderland');
+    actors.Bob.description = 'Bob';
+
+    const messages = parser.yy.getMessages();
+
+    expect(messages.length).toBe(2);
+    expect(messages[0].from).toBe('Alice-in-Wonderland');
+    expect(messages[1].from).toBe('Bob');
+  });
   it('it should alias participants', function() {
     const str = `
 sequenceDiagram