  - Dependencies; update to Ebitengine 2.5.
  - Engine: add support for stretched aspect on Android.
  - Engine: can now pass `-portable` to run as a portable application (with
    configs and saves in the local directory).
  - Engine: provide the correct time zone on Android.
  - Engine: speed up sound loading on Win32.
  - Localization: new language: Chinese (Simplified)!
