- Linting (ESLint): Finish extensions and most files in editor/; unfinished: editor/svg-editor.js, editor/svgcanvas.js

- Linting (ESLint): Fix ignore file paths
- History `elem` fix

editor/extensions/ext-panning.xml

@@ -1,7 +1,7 @@
 <svg xmlns="http://www.w3.org/2000/svg">
 	<g id="ext-panning">
 	  <svg xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300">
-                  <path fill="#7f0000" stroke="#000000" stroke-width="10" d="m1.00037,150.34581l55.30305,-55.30267l0,27.65093l22.17356,0l0,-44.21833l44.21825,0l0,-22.17357l-27.65095,0l55.30267,-55.30292l55.3035,55.30292l-27.65175,0l0,22.17357l44.21835,0l0,44.21833l22.17357,0l0,-27.65093l55.30345,55.30267l-55.30345,55.3035l0,-27.65175l-22.17357,0l0,44.21834l-44.21835,0l0,22.17355l27.65175,0l-55.3035,55.30348l-55.30267,-55.30348l27.65095,0l0,-22.17355l-44.21825,0l0,-44.21834l-22.17356,0l0,27.65175l-55.30305,-55.3035z"></path>
+          <path fill="#7f0000" stroke="#000000" stroke-width="10" d="m1.00037,150.34581l55.30305,-55.30267l0,27.65093l22.17356,0l0,-44.21833l44.21825,0l0,-22.17357l-27.65095,0l55.30267,-55.30292l55.3035,55.30292l-27.65175,0l0,22.17357l44.21835,0l0,44.21833l22.17357,0l0,-27.65093l55.30345,55.30267l-55.30345,55.3035l0,-27.65175l-22.17357,0l0,44.21834l-44.21835,0l0,22.17355l27.65175,0l-55.3035,55.30348l-55.30267,-55.30348l27.65095,0l0,-22.17355l-44.21825,0l0,-44.21834l-22.17356,0l0,27.65175l-55.30305,-55.3035z"></path>
   	</svg>
 	</g>
 </svg>