In System Settings → Keyboard → Shortcuts → Custom you can now choose from a list of installed apps and their actions—in addition to being able to execute custom commands. This makes it super straightforward to add a keyboard shortcut for your most common workflows like composing a new email or adding a new Calendar event. Plus System Settings will also now warn you if your desired keyboard shortcut conflicts with a common system shortcut like "Copy", "Paste", or "New Tab"