feat(flowchart): support keyword `flow`

Closes #113

data/even/assets.json

@@ -1,6 +1,6 @@
 {
   "even": {
-    "css": "even.93844dae.min.css",
-    "js": "even.ece58db6.min.js"
+    "css": "even.c2a46f00.min.css",
+    "js": "even.26188efa.min.js"
   }
 }

exampleSite/content/post/js-flowchart-diagrams.md

@@ -41,7 +41,7 @@ flowchartDiagrams:
 
 ## Usage
 
-```flowchart
+```flow
 st=>start: Start|past:>http://www.google.com[blank]
 e=>end: End:>http://www.google.com
 op1=>operation: My Operation|past
@@ -61,6 +61,46 @@ c2(no)->op2->e
 
 <!--more-->
 
+{{< highlight "linenos=table" >}}
+```flow
+st=>start: Start|past:>http://www.google.com[blank]
+e=>end: End:>http://www.google.com
+op1=>operation: My Operation|past
+op2=>operation: Stuff|current
+sub1=>subroutine: My Subroutine|invalid
+cond=>condition: Yes
+or No?|approved:>http://www.google.com
+c2=>condition: Good idea|rejected
+io=>inputoutput: catch something...|request
+
+st->op1(right)->cond
+cond(yes, right)->c2
+cond(no)->sub1(left)->op1
+c2(yes)->io->e
+c2(no)->op2->e
+```
+{{< / highlight >}}
+
+## Legacy Usage
+
+```flowchart
+st=>start: Start|past:>http://www.google.com[blank]
+e=>end: End:>http://www.google.com
+op1=>operation: My Operation|past
+op2=>operation: Stuff|current
+sub1=>subroutine: My Subroutine|invalid
+cond=>condition: Yes
+or No?|approved:>http://www.google.com
+c2=>condition: Good idea|rejected
+io=>inputoutput: catch something...|request
+
+st->op1(right)->cond
+cond(yes, right)->c2
+cond(no)->sub1(left)->op1
+c2(yes)->io->e
+c2(no)->op2->e
+```
+
     ```flowchart
     st=>start: Start|past:>http://www.google.com[blank]
     e=>end: End:>http://www.google.com

src/js/even.js

@@ -221,7 +221,7 @@ Even._linkToc = function() {
 Even.flowchart = function() {
   if (!window.flowchart) return;
 
-  const blocks = document.querySelectorAll('pre code.language-flowchart');
+  const blocks = document.querySelectorAll('pre code.language-flowchart, pre code.language-flow');
   for (let i = 0; i < blocks.length; i++) {
     if (!window.hljs && i % 2 === 0) continue;