Merge branch 'master' into issue#256

Author: zvonimirfras

src/number-input/number.component.ts

@@ -55,13 +55,15 @@ export class NumberChange {
 			<div *ngIf="!skeleton" class="bx--number__controls">
 				<button
 					class="bx--number__control-btn up-icon"
+					type="button"
 					aria-live="polite"
 					aria-atomic="true"
 					(click)="onIncrement()">
 					<ibm-icon-caret-up16></ibm-icon-caret-up16>
 				</button>
 				<button
 					class="bx--number__control-btn down-icon"
+					type="button"
 					aria-live="polite"
 					aria-atomic="true"
 					(click)="onDecrement()">