Consolidated update to Squirrel

[LEOYoon-Tsaw]

• Surrounding high lights for all candidates:
  • Set preset_color_schemes/xxx/candidate_back_color to enable (Not specified unless explicitly defined)
  • style/surrounding_extra_expansion controls the relative size to the selected candidate's surrounding block. Negative value means smaller, while positive means larger, default to 0.
• Adopts TextKit 2, the result is more reliable text layout, especially in vertical mode, and with exotic characters like Emoji. 高亮背景显示错乱 #748
  • This is also an elegant fix for the annoying line height alternation when Emoji shows and disappears.
  • Requires macOS 12+
• Mouse interactions (Needs Add new APIs, peek selection and change page librime#620)
  • Hover over and click on any candidate to select it
  • Swipe or scroll on the panel to page up/down
• Various UI improvements:
  • style/border_height and style/border_width can now be negative, use in combination with style/corner_radius
  • style/line_spacing and spacing can now be negative.
  • All font_size can use float number.
  • Labels are vertically centered when using a different label_font_size from the main font_size
  • Add style/status_message_type: mix(default) / long / short to Handle abbrev status label when status updates
  • Add style/memorize_size: true/false to control sticking panel width behavior, if you want stable first candidate position. i.e. 候选框随候选自动伸长到屏幕边缘后，回删时不再根据候选自动缩短 #523
  • style/alpha: 0 is now valid, can be used to completely hide the panel
  • Add style/shadow_size: 0 to specify shadow under selected candidate. Default to 0 with no shadow.
  • Add style/mutual_exclusive: true/false to allow colors not stacking on each other, and have greater flexibility in transparent UI design. Default to false

[LEOYoon-Tsaw]

🎉