Expand text box limit from 200 to 10,000

Prevents the program from crashing when reaching layer 200 due to running out of free text boxes. Fixes #92.
It will still crash on layer ~10,000, so a proper fix must still be applied (for example, preventing the user from scrolling at all beyond the 10,000th layer).

Author: Bentroen

scripts/control_create/control_create.gml

@@ -78,7 +78,7 @@ section_exists = 0
 section_start = 0
 section_end = 0
 timeline_pressa = -1
-for (a = 0; a < 200; a += 1) text_exists[a] = 0
+for (a = 0; a < 10000; a += 1) text_exists[a] = 0
 
 // Note blocks
 starta = 0