alloc big buffers on heap

readme.md

@@ -1,6 +1,6 @@
 ## about 
 
-tim.h is a portable library to create simple terminal applications
+tim->h is a portable library to create simple terminal applications
 Demo video: https://asciinema.org/a/zn3p0dsVCOQOzwY1S9gDfyaxQ
 
 ## quick start 
@@ -66,7 +66,7 @@ immediately followed by a draw event in order to make changes visible.
 Some elements need to consume events, for example edit consumes the key
 event when focused in order to prevent other key handlers on acting on them.
 
-The current event is stored in tim.event.
+The current event is stored in tim->event.
 
  event       | cause
 -------------|-----------------------