[new] Give signal! a default kind and level

projects/main/resources/signal-docstrings/signal!.txt

@@ -1,8 +1,8 @@
 Low-level generic signal creator.
 
 API: [opts] => depends on options [2]
-Default  kind: none (optional)
-Default level: none (must be provided)
+Default  kind: `:generic`
+Default level: `:info`
 
 When filtering conditions are met [4], creates a Telemere signal [3] and
 dispatches it to registered handlers for processing (e.g. writing to

projects/main/src/taoensso/telemere/impl.cljc

@@ -568,8 +568,8 @@
       :arglists (signal-arglists  :signal!)}
      [opts]
      (have? map? opts) ; We require const map keys, but vals may require eval
-     (let [defaults              (get    opts :defaults)
-           opts  (merge defaults (dissoc opts :defaults))
+     (let [defaults (enc/merge {:kind :generic, :level :info} (get opts :defaults))
+           opts     (enc/merge defaults (dissoc opts :defaults))
            cljs? (boolean (:ns &env))
            clj?  (not cljs?)
            {run-form :run} opts