diff --git a/.gitignore b/.gitignore
index a3e11540..5f98ac3d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,5 @@ package-lock.json
 */**/package-lock.json
 yarn-error.log
 .DS_Store
+
+.idea
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a85a9118..c85b141e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 # Version 4.0.0
 
+## 4.0.15 (Mar 12, 2019)
+
+- Fix: popup close button click event propagates to map (#751)
+
 ## 4.0.14 (Mar 4, 2019)
 
 - Fix static context bug (#749)
diff --git a/package.json b/package.json
index 0509c645..ec11de31 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "react-map-gl",
   "description": "A React wrapper for MapboxGL-js and overlay API.",
-  "version": "4.0.14",
+  "version": "4.0.15",
   "keywords": [
     "mapbox",
     "mapbox-gl",
diff --git a/test/src/utils/transition-manager.spec.js b/test/src/utils/transition-manager.spec.js
index 4e360e08..8f512be5 100644
--- a/test/src/utils/transition-manager.spec.js
+++ b/test/src/utils/transition-manager.spec.js
@@ -268,7 +268,7 @@ const TEST_CASES_EVENTS = [
 
 function compareFunc(func1, func2, step){
   for(let i = 0; i <= 1; i += step){
-    if(!equals(func1(i), func2(i))) return false;
+    if(!equals(func1(i), func2(i), 1e-7)) return false;
   }
   return true;
 }
@@ -292,7 +292,7 @@ test('TransitionManager#TRANSITION_EVENTS', t => {
       // testing duration
       const testDuration = mode === TRANSITION_EVENTS.UPDATE ?
         testCase.input[ti].transitionDuration - (time[1] - time[0]) : testCase.input[ti].transitionDuration;
-      t.is(equals(transitionManager.state.duration, testDuration), testCase.shouldChange[mode].transitionDuration, 'transitionDuration match');
+      t.is(equals(transitionManager.state.duration, testDuration, 1e-7), testCase.shouldChange[mode].transitionDuration, 'transitionDuration match');
 
       // testing easing function
       let testEasingFunc = testCase.input[ti].transitionEasing;
diff --git a/test/test-utils.js b/test/test-utils.js
index 14e015c2..fc9039ce 100644
--- a/test/test-utils.js
+++ b/test/test-utils.js
@@ -25,6 +25,6 @@ export function isSameLocation(lngLat1, lngLat2) {
   return ((lng1 - lng2) % 360) === 0 && lat1 === lat2;
 }
 
-export function equals(a, b) {
-  return Math.abs(a - b) < EPSILON;
+export function equals(a, b, epsilon = EPSILON) {
+  return Math.abs(a - b) < epsilon;
 }