Allow - in classnames when using bem

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vscode-emmet-helper",
-  "version": "1.1.19",
+  "version": "1.1.20",
   "description": "Helper to use emmet modules in Visual Studio Code",
   "main": "./out/emmetHelper.js",
   "types": "./out/emmetHelper.d.ts",

src/expand/expand-full.js

@@ -2127,8 +2127,8 @@ const defaultOptions$3 = {
 	modifier: '_'
 };
 
-const reElement  = /^(-+)([a-z0-9]+)/i;
-const reModifier = /^(_+)([a-z0-9]+)/i;
+const reElement  = /^(-+)([a-z0-9]+[a-z0-9-]*)/i;
+const reModifier = /^(_+)([a-z0-9]+[a-z0-9-]*)/i;
 const blockCandidates1 = className => /^[a-z]\-/i.test(className);
 const blockCandidates2 = className => /^[a-z]/i.test(className);