Спампаваць D2 0.6.9

Features 🚀
- Animations: style.animated: true is supported on shapes #2250
- Connections now support link #1955
- Vars: vars in markdown blocks are substituted #2218
- Markdown: Github-flavored tables work in md blocks #2221
- Render: adds box arrowheads #2227
- d2 fmt now supports a --check flag #2253
- CLI: PNG output to stdout is supported using --stdout-format png - #2291
- Globs: &connected and &leaf filters are implemented #2299
- CLI: add --no-xml-tag for direct HTML embedding #2302
- CLI: play cmd added for opening d2 input in online playground #2242
Improvements 🧹
- Composition: links pointing to own board are purged #2203
- Syntax: reserved keywords must be unquoted #2231
- Latex: Backslashes in Latex blocks do not escape #2232

- This is a breaking change. Previously Latex blocks required escaping the backslash. So
for older D2 versions, you should remove the excess backslashes.
- Links: non-http url scheme links are supported (e.g. x.link: vscode://file/) #2237
- Compiler: reserved keywords with missing values error instead of silently doing nothing #2251
- Render: SVG outputs conform to stricter HTML standards, e.g. no duplicate ids #2273
- Themes: theme names are consistently cased #2322
- Nears: constant nears avoid collision with edge routes #2327
Bugfixes ⛑️
- Imports: fixes using substitutions in icon values #2207
- Markdown: fixes ampersands in URLs in markdown #2219
- Globs: fixes edge case where globs with imported boards would create empty boards #2247
- Sequence diagrams: fixes alignment of notes when self messages are above it #2264
- Null: fixes nulling a connection with absolute syntax #2318
- Gradients: works with connection fills #2326
- Latex: fixes backslashes doubling on successive parses #2328