Merge pull request #1603 from anna-marina/fold-comments

Add multiline comment folding. Resolve #1408

src/scadlexer.cpp

@@ -28,6 +28,8 @@ ScadLexer::ScadLexer(QObject *parent) : QsciLexerCPP(parent)
 		"intersection linear_extrude rotate_extrude import group  "
 		"projection render surface scale rotate mirror translate "
 		"multmatrix color offset ";
+
+    setFoldComments(true);
 }
 
 ScadLexer::~ScadLexer()