~whereswaldon/arborchat

ref: 621e4a8cf2087fc1e408305186efbfe9fef22744 arborchat/specifications/twig-extensions d---------
Add invisible metadata specification
doc: fix small typos in active status spec

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
fix: link to toml directly

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
fix: restructure markdown to appease wiki

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
Add expiration specification
Add twig extensions spec README
Add active-status spec