add cadance

Signed-off-by: Mattias Andrée <maandree@operamail.com>
update todo

Signed-off-by: Mattias Andrée <maandree@operamail.com>
gitignore typo

Signed-off-by: Mattias Andrée <maandree@operamail.com>
add celestia

Signed-off-by: Mattias Andrée <maandree@operamail.com>