v0.12.0

Changes & fixes

• xplr.config.node_types.mime_essence has split into type and subtype. Hence, instead of xplr.config.node_types.mime_essence["text/plain"] = .. use xplr.config.node_types.mime_essence["text"] = { plain = .. }.
• You can also define xplr.config.node_types.mime_essence["text"]["*"] that will match all text types (text/*).
• Functions called using CallLua and CallLuaSilently now have optional return type.
• Some minor improvements to permission rendering.