Fix automatic instrument number changing, and bump the version to 4.2.

Author: johnnesky

editor/EditorConfig.ts

@@ -22,7 +22,7 @@ export function prettyNumber(value: number): string {
 }
 
 export class EditorConfig {
-	public static readonly version: string = "4.1.1";
+	public static readonly version: string = "4.2";
 
 	public static readonly versionDisplayName: string = "BeepBox";
 	public static readonly releaseNotesURL: string = "https://github.com/johnnesky/beepbox/releases/tag/v" + EditorConfig.version;

editor/Selection.ts

@@ -101,7 +101,7 @@ export class Selection {
 		this._changeTrack.append(new ChangeChannelBar(this._doc, channelIndex, bar));
 		// @jummbus - changing current viewed instrument to the first for the current pattern if the viewedInstrument is not in the pattern
 		const pattern: Pattern | null = this._doc.getCurrentPattern(0);
-		if (pattern != null) {
+		if (pattern != null && this._doc.song.patternInstruments) {
 			if (pattern.instruments.indexOf(this._doc.viewedInstrument[this._doc.channel]) == -1) {
 				this._doc.viewedInstrument[this._doc.channel] = pattern.instruments[0];
 			}

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "BeepBox",
-	"version": "4.1.1",
+	"version": "4.2",
 	"description": "BeepBox is an online tool for sketching and sharing instrumental music.",
 	"author": "John Nesky",
 	"license": "MIT",