Turn expressions of type byte used in if tests into conditions (#88)

Author: strange-program

dana/programs/bsort.dana

@@ -20,7 +20,7 @@ def main
           i := i+1
         else:
           break : inner_loop_label
-      if not changed:
+      if not (changed = true) :
         break : outer_loop_label
 
   def writeArray: msg as byte [], n as int, x as int []

dana/programs/linemarket.dana

@@ -83,7 +83,7 @@ def main
 
                 if distance <= 0 : distance := 1
 
-                if possible_store(lmd_arr, distance, spaces, num_stores):
+                if possible_store(lmd_arr, distance, spaces, num_stores) = true:
                     result := distance
                     left := distance + 1
                 else: