v0.3.0

• docs: describe the current feature set in the README
• feat: navigate the recording picker with the keyboard
• fix: make picker thumbnails real buttons
• feat: constrain area selection to common aspect ratios
• feat: adjust an area selection before committing
• ui: show the selection size while dragging an area
• feat: export a GIF from the preview
• feat: export a smaller copy from the preview
• ui: record again from the preview window
• feat: toggle mic and camera per recording
• feat: meter the microphone input
• feat: offer gradient backgrounds for framed windows
• feat: frame window recordings on a background
• feat: highlight the cursor and clicks
• feat: record in HEVC
• feat: choose the recording resolution
• feat: pause and resume a recording
• feat: discard a recording in progress
• feat: play a cue when recording starts and stops
• feat: show the camera overlay during the countdown
• perf: track the recorded window more responsively
• feat: outline the recorded window while recording
• ui: show the quick-record target in the menu
• feat: reuse the last selected area
• feat: preselect the last target in the picker
• feat: remember the recording target across launches
• refactor: extract recording file handling
• refactor: extract frame compositing from the recorder
• refactor: support more than one global shortcut
• refactor: capture recording options when a recording starts
• refactor: report recording state through a callback
• fix: stop cleanly when the disk runs low
• fix: check free space before starting a recording
• docs: correct the camera overlay size persistence comment
• feat: offer relaunch from the welcome window
• fix: scroll the recording settings tab
• fix: allow refreshing an empty recording picker
• fix: keep the countdown from stealing focus
• Remove garbage