Bump version (#182)

* Bump version
* Add one missing chhangelog
---------

Signed-off-by: starry-shivam <[email protected]>

Author: starry-shivam

app/build.gradle

@@ -18,8 +18,8 @@ android {
         applicationId "com.starry.greenstash"
         minSdk 24
         targetSdk 36
-        versionCode 394
-        versionName "3.9.4"
+        versionCode 400
+        versionName "4.0.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {

fastlane/metadata/android/en-US/changelogs/400.txt

@@ -0,0 +1,6 @@
+- Update target SDK to Android 16 (API 36)
+- Added predictive back gesture support throughout the UI
+- Date picker now defaults to the selected date instead of the current date when editing a goal
+- Fixed issue where the date style option in settings did not reflect changes until reloading the screen
+- Updated Spanish translation and made other translation improvements
+- Minor fixes and dependency updates for smoother, faster performance