feat: add continuos method

Author: Marco Cesarato

src/InputSpinner.js

@@ -460,7 +460,7 @@ class InputSpinner extends Component {
 		if (
 			this.maxReached(currentValue) &&
 			!this.isEmptied() &&
-			this.props.continuity !== false
+			this.isContinuos()
 		) {
 			// Continuity mode
 			num = this.state.min;
@@ -502,7 +502,7 @@ class InputSpinner extends Component {
 		if (
 			this.minReached(currentValue) &&
 			!this.isEmptied() &&
-			this.props.continuity !== false
+			this.isContinuos()
 		) {
 			// Continuity mode
 			num = this.state.max;
@@ -639,6 +639,14 @@ class InputSpinner extends Component {
 		return !this.props.disabled && this.props.editable;
 	}
 
+	/**
+	 * If continuity mode enabled
+	 * @returns {boolean|Boolean}
+	 */
+	isContinuos() {
+		return this.props.continuity !== false;
+	}
+
 	/**
 	 * If input can be empty
 	 * @returns {boolean|Boolean}