v0.17.0

Adds --merge-config, so you can keep auto-detection for most languages and overlay a config file to add or override just the servers you need. Requested by @Pakti (#13).

Added

• --merge-config flag (#13): overlay a config file on top of auto-detected servers instead of replacing them. Auto-detection forms the base; each config entry either overrides an auto-detected server (matched by language identifier, falling back to the first extension) or adds a new one, while un-overridden auto-detected servers are kept. --config is unchanged (still replaces auto-detection entirely). Requested by @Pakti.