First release for .NET 5.

Features

• Abbreviations
• Auto identifiers
• Citations
• Custom containers
• Definition lists
• Emphasis extras
• Figures
• Footers
• Footnotes
• GridTables
• Mathematics
• Media links
  • Youtube
  • Bilibili
  • Netease music
• Pipe tables
• Task lists
• Diagrams, flowcharts
• Auto links
• Smarty pants
• Emoji
• Code highlighting