Add check-square and x-square icons

CHANGELOG.md

@@ -77,6 +77,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   - `camera`
   - `check`
   - `check-circle`
+  - `check-square`
   - `cloud`
   - `cog`
   - `comment-square`

icons-manifest.json

@@ -89,6 +89,8 @@
   "square",
   "plus-square",
   "minus-square",
+  "check-square",
+  "x-square",
   "circle",
   "plus-circle",
   "minus-circle",

icons/check-square.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <polyline points="9 11 12 14 23 3"/>
+  <path d="M21,12v7a2,2,0,0,1-2,2H5a2,2,0,0,1-2-2V5A2,2,0,0,1,5,3H16"/>
+</svg>

icons/x-square.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <rect x="3" y="3" width="18" height="18" rx="2" ry="2"/>
+  <line x1="9" y1="9" x2="15" y2="15"/>
+  <line x1="15" y1="9" x2="9" y2="15"/>
+</svg>