Changes in v2.14.0

Commits since v2.13.0:

• feat: prefix placeholders with "cmd:" to allow running commands (e7d2717)
• chore(nix): update flake (#672) (3310f77)
• feat: implement niriactions provider (572f6eb)
• fix: truncate label text with unknown length (#671) (b849c15)
• minor: improve dmenu performance by batching (2df7b88)