Fixed deprecated include of L.Mixin.Events (#21) and updated leaflet dependency.

index.html

     <meta charset=utf-8 />
     <meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui' />
     <title>Leaflet Side-by-side</title>
-    <script src='http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet-src.js'></script>
+    <script src='http://cdn.leafletjs.com/leaflet/v1.3.1/leaflet.js'></script>
     <script src="leaflet-side-by-side.js"></script>
-    <link href='http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css' rel='stylesheet' />
+    <link href='http://cdn.leafletjs.com/leaflet/v1.3.1/leaflet.css' rel='stylesheet' />
     <style>
     body {
         margin: 0;
         attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap<\/a> contributors'
     }).addTo(map);
 
-    var stamenLayer = L.tileLayer('//stamen-tiles-{s}.a.ssl.fastly.net/watercolor/{z}/{x}/{y}.png', {
+    var stamenLayer = L.tileLayer('https://stamen-tiles-{s}.a.ssl.fastly.net/watercolor/{z}/{x}/{y}.png', {
         attribution:
             'Map tiles by <a href="http://stamen.com">Stamen Design<\/a>, ' +
             '<a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0<\/a> &mdash; ' +

index.js

 
   setPosition: noop,
 
-  includes: L.Mixin.Events,
+  includes: L.Evented.prototype || L.Mixin.Events,
 
   addTo: function (map) {
     this.remove()

leaflet-side-by-side.js

-(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
 (function (global){
 var L = (typeof window !== "undefined" ? window['L'] : typeof global !== "undefined" ? global['L'] : null)
 require('./layout.css')
 
   setPosition: noop,
 
-  includes: L.Mixin.Events,
+  includes: L.Evented.prototype || L.Mixin.Events,
 
   addTo: function (map) {
     this.remove()
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"./layout.css":2,"./range.css":4}],2:[function(require,module,exports){
-var css = ".leaflet-sbs-range {\n    position: absolute;\n    top: 50%;\n    width: 100%;\n    z-index: 999;\n}\n.leaflet-sbs-divider {\n    position: absolute;\n    top: 0;\n    bottom: 0;\n    left: 50%;\n    margin-left: -2px;\n    width: 4px;\n    background-color: #fff;\n    pointer-events: none;\n    z-index: 999;\n}\n"; (require("./node_modules/cssify"))(css, undefined, '/data/github/leaflet-side-by-side/layout.css'); module.exports = css;
-},{"./node_modules/cssify":3}],3:[function(require,module,exports){
+var css = ".leaflet-sbs-range {\r\n    position: absolute;\r\n    top: 50%;\r\n    width: 100%;\r\n    z-index: 999;\r\n}\r\n.leaflet-sbs-divider {\r\n    position: absolute;\r\n    top: 0;\r\n    bottom: 0;\r\n    left: 50%;\r\n    margin-left: -2px;\r\n    width: 4px;\r\n    background-color: #fff;\r\n    pointer-events: none;\r\n    z-index: 999;\r\n}\r\n"; (require("./node_modules\\cssify"))(css, undefined, 'c:\Dev\leaflet-side-by-side\layout.css'); module.exports = css;
+},{"./node_modules\\cssify":3}],3:[function(require,module,exports){
 function injectStyleTag(document, fileName, cb) {
   var style = document.getElementById(fileName);
 
 };
 
 },{}],4:[function(require,module,exports){
-var css = ".leaflet-sbs-range {\n    -webkit-appearance: none;\n    display: inline-block!important;\n    vertical-align: middle;\n    height: 0;\n    padding: 0;\n    margin: 0;\n    border: 0;\n    background: rgba(0, 0, 0, 0.25);\n    min-width: 100px;\n    cursor: pointer;\n    pointer-events: none;\n    z-index: 999;\n}\n.leaflet-sbs-range::-ms-fill-upper {\n    background: transparent;\n}\n.leaflet-sbs-range::-ms-fill-lower {\n    background: rgba(255, 255, 255, 0.25);\n}\n/* Browser thingies */\n\n.leaflet-sbs-range::-moz-range-track {\n    opacity: 0;\n}\n.leaflet-sbs-range::-ms-track {\n    opacity: 0;\n}\n.leaflet-sbs-range::-ms-tooltip {\n    display: none;\n}\n/* For whatever reason, these need to be defined\n * on their own so dont group them */\n\n.leaflet-sbs-range::-webkit-slider-thumb {\n    -webkit-appearance: none;\n    margin: 0;\n    padding: 0;\n    background: #fff;\n    height: 40px;\n    width: 40px;\n    border-radius: 20px;\n    cursor: ew-resize;\n    pointer-events: auto;\n    border: 1px solid #ddd;\n    background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAMAAAC5zwKfAAAABlBMVEV9fX3///+Kct39AAAAAnRSTlP/AOW3MEoAAAA9SURBVFjD7dehDQAwDANBZ/+l2wmKoiqR7pHRcaeaCxAIBAL/g7k9JxAIBAKBQCAQCAQC14H+MhAIBE4CD3fOFvGVBzhZAAAAAElFTkSuQmCC\");\n    background-position: 50% 50%;\n    background-repeat: no-repeat;\n    background-size: 40px 40px;\n}\n.leaflet-sbs-range::-ms-thumb {\n    margin: 0;\n    padding: 0;\n    background: #fff;\n    height: 40px;\n    width: 40px;\n    border-radius: 20px;\n    cursor: ew-resize;\n    pointer-events: auto;\n    border: 1px solid #ddd;\n    background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAMAAAC5zwKfAAAABlBMVEV9fX3///+Kct39AAAAAnRSTlP/AOW3MEoAAAA9SURBVFjD7dehDQAwDANBZ/+l2wmKoiqR7pHRcaeaCxAIBAL/g7k9JxAIBAKBQCAQCAQC14H+MhAIBE4CD3fOFvGVBzhZAAAAAElFTkSuQmCC\");\n    background-position: 50% 50%;\n    background-repeat: no-repeat;\n    background-size: 40px 40px;\n}\n.leaflet-sbs-range::-moz-range-thumb {\n    padding: 0;\n    right: 0    ;\n    background: #fff;\n    height: 40px;\n    width: 40px;\n    border-radius: 20px;\n    cursor: ew-resize;\n    pointer-events: auto;\n    border: 1px solid #ddd;\n    background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAMAAAC5zwKfAAAABlBMVEV9fX3///+Kct39AAAAAnRSTlP/AOW3MEoAAAA9SURBVFjD7dehDQAwDANBZ/+l2wmKoiqR7pHRcaeaCxAIBAL/g7k9JxAIBAKBQCAQCAQC14H+MhAIBE4CD3fOFvGVBzhZAAAAAElFTkSuQmCC\");\n    background-position: 50% 50%;\n    background-repeat: no-repeat;\n    background-size: 40px 40px;\n}\n.leaflet-sbs-range:disabled::-moz-range-thumb {\n    cursor: default;\n}\n.leaflet-sbs-range:disabled::-ms-thumb {\n    cursor: default;\n}\n.leaflet-sbs-range:disabled::-webkit-slider-thumb {\n    cursor: default;\n}\n.leaflet-sbs-range:disabled {\n    cursor: default;\n}\n.leaflet-sbs-range:focus {\n    outline: none!important;\n}\n.leaflet-sbs-range::-moz-focus-outer {\n    border: 0;\n}\n\n"; (require("./node_modules/cssify"))(css, undefined, '/data/github/leaflet-side-by-side/range.css'); module.exports = css;
-},{"./node_modules/cssify":3}]},{},[1]);
+var css = ".leaflet-sbs-range {\r\n    -webkit-appearance: none;\r\n    display: inline-block!important;\r\n    vertical-align: middle;\r\n    height: 0;\r\n    padding: 0;\r\n    margin: 0;\r\n    border: 0;\r\n    background: rgba(0, 0, 0, 0.25);\r\n    min-width: 100px;\r\n    cursor: pointer;\r\n    pointer-events: none;\r\n    z-index: 999;\r\n}\r\n.leaflet-sbs-range::-ms-fill-upper {\r\n    background: transparent;\r\n}\r\n.leaflet-sbs-range::-ms-fill-lower {\r\n    background: rgba(255, 255, 255, 0.25);\r\n}\r\n/* Browser thingies */\r\n\r\n.leaflet-sbs-range::-moz-range-track {\r\n    opacity: 0;\r\n}\r\n.leaflet-sbs-range::-ms-track {\r\n    opacity: 0;\r\n}\r\n.leaflet-sbs-range::-ms-tooltip {\r\n    display: none;\r\n}\r\n/* For whatever reason, these need to be defined\r\n * on their own so dont group them */\r\n\r\n.leaflet-sbs-range::-webkit-slider-thumb {\r\n    -webkit-appearance: none;\r\n    margin: 0;\r\n    padding: 0;\r\n    background: #fff;\r\n    height: 40px;\r\n    width: 40px;\r\n    border-radius: 20px;\r\n    cursor: ew-resize;\r\n    pointer-events: auto;\r\n    border: 1px solid #ddd;\r\n    background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAMAAAC5zwKfAAAABlBMVEV9fX3///+Kct39AAAAAnRSTlP/AOW3MEoAAAA9SURBVFjD7dehDQAwDANBZ/+l2wmKoiqR7pHRcaeaCxAIBAL/g7k9JxAIBAKBQCAQCAQC14H+MhAIBE4CD3fOFvGVBzhZAAAAAElFTkSuQmCC\");\r\n    background-position: 50% 50%;\r\n    background-repeat: no-repeat;\r\n    background-size: 40px 40px;\r\n}\r\n.leaflet-sbs-range::-ms-thumb {\r\n    margin: 0;\r\n    padding: 0;\r\n    background: #fff;\r\n    height: 40px;\r\n    width: 40px;\r\n    border-radius: 20px;\r\n    cursor: ew-resize;\r\n    pointer-events: auto;\r\n    border: 1px solid #ddd;\r\n    background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAMAAAC5zwKfAAAABlBMVEV9fX3///+Kct39AAAAAnRSTlP/AOW3MEoAAAA9SURBVFjD7dehDQAwDANBZ/+l2wmKoiqR7pHRcaeaCxAIBAL/g7k9JxAIBAKBQCAQCAQC14H+MhAIBE4CD3fOFvGVBzhZAAAAAElFTkSuQmCC\");\r\n    background-position: 50% 50%;\r\n    background-repeat: no-repeat;\r\n    background-size: 40px 40px;\r\n}\r\n.leaflet-sbs-range::-moz-range-thumb {\r\n    padding: 0;\r\n    right: 0    ;\r\n    background: #fff;\r\n    height: 40px;\r\n    width: 40px;\r\n    border-radius: 20px;\r\n    cursor: ew-resize;\r\n    pointer-events: auto;\r\n    border: 1px solid #ddd;\r\n    background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAMAAAC5zwKfAAAABlBMVEV9fX3///+Kct39AAAAAnRSTlP/AOW3MEoAAAA9SURBVFjD7dehDQAwDANBZ/+l2wmKoiqR7pHRcaeaCxAIBAL/g7k9JxAIBAKBQCAQCAQC14H+MhAIBE4CD3fOFvGVBzhZAAAAAElFTkSuQmCC\");\r\n    background-position: 50% 50%;\r\n    background-repeat: no-repeat;\r\n    background-size: 40px 40px;\r\n}\r\n.leaflet-sbs-range:disabled::-moz-range-thumb {\r\n    cursor: default;\r\n}\r\n.leaflet-sbs-range:disabled::-ms-thumb {\r\n    cursor: default;\r\n}\r\n.leaflet-sbs-range:disabled::-webkit-slider-thumb {\r\n    cursor: default;\r\n}\r\n.leaflet-sbs-range:disabled {\r\n    cursor: default;\r\n}\r\n.leaflet-sbs-range:focus {\r\n    outline: none!important;\r\n}\r\n.leaflet-sbs-range::-moz-focus-outer {\r\n    border: 0;\r\n}\r\n\r\n"; (require("./node_modules\\cssify"))(css, undefined, 'c:\Dev\leaflet-side-by-side\range.css'); module.exports = css;
+},{"./node_modules\\cssify":3}]},{},[1]);