Order: mergePaths will run before collapseGroups

This:

<g>
	<path d="pathdata"/>
	<path d="pathdata-2"/>
</g>

will now be optimized into

<path d="pathdata1+2"/>

rather than

<g><path d="pathdata1+2"/></g>

.svgo.yml

@@ -35,12 +35,12 @@ plugins:
   - convertShapeToPath
   - moveElemsAttrsToGroup
   - moveGroupAttrsToElems
-  - collapseGroups
   - convertPathData
   - convertTransform
   - removeEmptyAttrs
   - removeEmptyContainers
   - mergePaths
+  - collapseGroups
   - cleanupIDs
   - removeUnusedNS
   - transformsWithOnePath