add importable trace macro

buffer.fnl

@@ -1,5 +1,6 @@
 (local { : Gtk : Gdk : WebKit2 : cairo } (require :lgi))
 (local { : view } (require :fennel))
+(import-macros {: trace} :macros)
 
 (fn new-buffer [name]
   (var property-change-listener nil)

keymap.fnl

@@ -1,6 +1,7 @@
 (local { : Gdk } (require :lgi))
 (local { : view } (require :fennel))
 (local lume (require :lume))
+(import-macros {: trace} :macros)
 
 (local modifier-keyvals
        ;; we need to detect and discard modifier-only key events when

macros.fnl

@@ -0,0 +1,7 @@
+
+(fn trace [x]
+  `(do
+     (print :trace ,(view x) (view ,x))
+     ,x))
+
+{ : trace }