Merge pull request 'Fix mapstart/finish CanCollide check' (#21) from fix-can-collide into master

Reviewed-on: #21

common.js

@@ -213,7 +213,7 @@ async function validateMapAsset(assetId, game) {
     const mapParts = Array.from(mapStarts);
     mapParts.push(...mapFinishes);
     for (const part of mapParts) {
-        if (!part.CanCollide) {
+        if (part.CanCollide) {
             errors.push("The `MapStart` and `MapFinish` parts in your map must have the `CanCollide` property disabled.");
             break;
         }