Update changelog with 'open with' functionality

CHANGELOG.md

@@ -11,7 +11,8 @@
 - Bug fix: Fix unit tests on Windows
 - Bug fix: Do not hardcode "docker" in help messages, now that Podman is also used ([issue #122](https://github.com/freedomofpress/dangerzone/issues/122))
 - Bug fix: Failed execution no longer produces an empty "safe" documents ([issue #214](https://github.com/freedomofpress/dangerzone/issues/214))
-- Bug fix: Malfunctioning "New window" logic was replaced with multi-doc support (([issue #204](https://github.com/freedomofpress/dangerzone/issues/204)))
+- Bug fix: Malfunctioning "New window" logic was replaced with multi-doc support ([issue #204](https://github.com/freedomofpress/dangerzone/issues/204))
+- Bug fix: re-adds support for 'open with Dangerzone' from finder on macOS ([issue #268](https://github.com/freedomofpress/dangerzone/issues/268))
 - Bug fix: (macOS) quit Dangerzone when main window is closed ([issue #271](https://github.com/freedomofpress/dangerzone/issues/271))