tiny improvements

src/core/globalstate.ts

@@ -14,7 +14,7 @@ export class MobXGlobals {
 	 * MobX compatiblity with other versions loaded in memory as long as this version matches.
 	 * It indicates that the global state still stores similar information
 	 */
-	version = 4;
+	version = 5;
 
 	/**
 	 * Currently running derivation

src/core/observable.ts

@@ -105,7 +105,7 @@ export function queueForUnobservation(observable: IObservable) {
 }
 
 /**
- * Batch is a pseudotransaction, just for purposes of memoizing ComputedValues when nothing else does.
+ * Batch starts a transaction, at least for purposes of memoizing ComputedValues when nothing else does.
  * During a batch `onBecomeUnobserved` will be called at most once per observable.
  * Avoids unnecessary recalculations.
  */

src/core/reaction.ts

@@ -50,9 +50,7 @@ export class Reaction implements IDerivation, IReactionPublic {
 		if (!this._isScheduled) {
 			this._isScheduled = true;
 			globalState.pendingReactions.push(this);
-			startBatch();
 			runReactions();
-			endBatch();
 		}
 	}