No more get-key-blocking &rest map args

Looking back over the library, I realized that &rest args aren't really
used with maps anywhere else, so it doesn't make sense to use them here.

Author: zachallaun

docs/2-terminals.markdown

@@ -164,10 +164,10 @@ one if there's none already buffered) you can use `get-key-blocking`:
     ;
     ; => \a
 
-`get-key-blocking` optionally accepts a check interval or timeout:
+`get-key-blocking` optionally accepts a check interval and/or timeout:
 
     :::clojure
-    (t/get-key-blocking term :interval 100 :timeout 5000)
+    (t/get-key-blocking term {:interval 100 :timeout 5000})
     ;
     ; Key presses will be checked for every 100 msecs. If you wait
     ; 5 seconds, nil will be returned.

src/lanterna/screen.clj

@@ -281,8 +281,9 @@
     returning nil.
 
   "
-  [^Screen screen & {:keys [interval timeout] :as opts}]
-  (block-on get-key [screen] opts))
+  ([^Screen screen] (get-key-blocking screen {}))
+  ([^Screen screen & {:keys [interval timeout] :as opts}]
+     (block-on get-key [screen] opts)))
 
 
 (comment

src/lanterna/terminal.clj

@@ -246,8 +246,9 @@
     returning nil.
 
   "
-  [^Terminal terminal & {:keys [interval timeout] :as opts}]
-  (block-on get-key [terminal] opts))
+  ([^Terminal terminal] (get-key-blocking terminal {}))
+  ([^Terminal terminal {:keys [interval timeout] :as opts}]
+     (block-on get-key [terminal] opts)))
 
 
 (comment
@@ -260,8 +261,8 @@
   (start t)
   (set-fg-color t :yellow)
   (put-string t "Hello, world!")
-  (get-key-blocking t :timeout 1000)
-  (get-key-blocking t :interval 2000)
+  (get-key-blocking t {:timeout 1000})
+  (get-key-blocking t {:interval 2000})
   (stop t)
 
   )