Release 0.6.0

[0.6.0] - 2022-06-20

Added

• Added PixState::ui_width and PoixState::ui_height methods which take into
  account remaining screen space with regards to current UI cursor position and
  frame padding.
• Added configurable scroll_size to the UI theme for the width of rendered
  scrollbars.
• Added PixState::mouse_dbl_clicked method indicating mouse was double clicked
  last frame.
• Added PixState::dbl_clicked method indicating mouse was double clicked on
  the previous UI widget drawn.
• Added PixState::set_column_offset and PixState::reset_column_offset to
  allow controlling the x-offset cursor position when rendering UI elements.
• Added ThemeBuilder to pix_engine::prelude.
• Added PixState::focused_window that takes a WindowId to check for focus.
• Added PixState::audio_size to query the current size of the audio queue
  device.
• Added Triangle contains Point implementation.
• Added arrow keyboard navigation to PixState::select_box while focused.

Changed

• Improved element focus and blur.
• Increased the relative font size of PixState::monospace.
• Removed indent of children under PixState::collapsing_header.
• Fixed UI elements being able to take focus if disabled.
• Blur focus by clicking outside on UI elements and by pressing escape/enter in
  input fields.
• Default types and dimensions for Point, Vector, Line, Triangle,
  Quad, Light and LightSource are now defined.
• Changed how PixState::on_update handles frame rates and no longer sleeps
  when vsync is enabled.
• Changed vertical scroll direction to be natural.
• Set default audio buffer size to 4096.
• Updated audio buffer doucmentation.
• Changed default audio settings to use device defaults.
• Swapped lazy_static for once_cell.

Fixed

• Fixed widgets to properly render the label with the current fill color.
• Fixed PixState::bullet to be more indented.
• Fixed PixState::tab size
• Fixed PixState::select_list padding
• Fixed PixState::mod_down to correctly return true when multiple modifiers
  are pressed.
• Fixed off-by-one error in Ellipse::bounding_rect.
• Fixed target_frame_rate epsilon.
• Fixed update rate limiting when vsync is disabled and no target_frame_rate
• set.
• Fixed PixState::select_box expanding on focus and unexpanding when focus
  is lost.
• Fixed PixState::font_size affecting Theme font size.

Breaking

• Changed PixState::tab_bar to take a selected parameter to control the
  initial selected tab and changed the callback to take a generic type instead
  of a usize.
• PixState::enqueue_audio now returns a PixResult in the event the audio
  device fails, or the max queue size is reached.
• Removed clearing the screen by default in AppState::on_update, leaving it to
  the application to choose when to clear the screen.
• Changed PixState::focused to return true whether any active windows have
  focus.
• Renamed PixState::keymods to PixState::keymod which now returns a single
  &KeyMod value instead of a HashSet<KeyMod> since KeyMod is already a
  set of bitflags.
• Changed PixState::delta_time and PixState::elapsed to return a Duration
  instead of milliseconds.
• Changed PixState::avg_frame_rate to return an f32 instead of usize.
• Changed PixState::stroke_weight to accept a u16 instead of a u8.
• Removed generic type aliases for all types that now have reasonable defaults.
• Removed PixState::no_* (e.g. no_stroke, no_fill, etc) methods in favor
  of the main setter method accepting false or None.
• Added PartialEq to Num trait.
• Modified Contains and Intersects traits to be more generic and have a
  single contains or intersects method to allow for future implementations
  of other shapes.
• Added PixState::audio_queued_size and changed PixState::audio_size to
  return the buffer capacity instead of the queued size.
• Added support for multiple concrete channel types for AudioCallback via
  an associated trait type.
• Removed vcpkg feature support due to flaky error rates. Windows builds now
  can utilize a build script with static linking. macOS and Linux can
  continue using homebrew or their distros package manager.
• Changed PixEngineBuilder::scale to only set rendering scale and to not
  affect window size, to mirror PixState::scale. Removed
  WindowBuilder::scale.
• Renamed all primitive as_bytes and as_array methods to points
  and coords.