New lexers:

• ASN.1 (#2462)
• Blueprint (#2434)
• BQN (#2472)
• DNS zone files (#2464)
• GraphQL (#2428)
• Linux desktop files (following the specification of the Freedesktop group, formerly known as XDG) (#2470)
• NVIDIA PTX (#2432)
• OpenSCAD (#2449)
• systemd (#2470)
• TLS presentation language (#2455)
• Verifpal (#2430)
• YARA (#2453)

Updated lexers:

• ASC: Add application/pem-certificate-chain mimetype (#2471)
• C/C++: Refine keyword lists (#2421, #2422)
• Carbon: Fix long processing times on invalid input, fix number lexing (#2454, #2456)
• Elpi: Handle quotations (#2419)
• Go: Support additional built-ins (#2481)
• HTTP: Support empty headers (#2461), support more general methods (#2460), also recognize responses in analyse_text implementation (#2460), and highlight URL encoded data (#2465, #1620)
• Igor Pro: Update to Igor Pro 9 (#2482)
• lean: Recognize expressions nested within attributes (#1817)
• Macaulay2: Update builtins (#2457)
• Markdown: Allow extra characters after language name
  in code blocks (#2437)
• NestedText: Update to version 3 (#2459)
• scdoc: Improve language guessing implementation (#2402)
• Spice: Update to latest version (#2476)
• Transact SQL: Add Pre-sorted Group keyword (#2417)
• Uxntal: Update for current runes (#2424)
• Wikitext: Fix templates in wiki links; fix a language converter false positive; add bold italic markup (#2447)

Add Generic.EmphStrong token for bold italic markup (#2444)

Add Lightbulb style (#2474)

Improve contrast in Monokai style (#2448)

Add documentation how to create terminal code highlighting commands (#2131, #2425)

Add support for loading TrueType fonts to the ImageFormatter (#1960)