Set intro of the enum and implict string concatenation deprecation entry to the past

Author: wilzbach

deprecate.dd

@@ -59,7 +59,7 @@ $(SPEC_S Deprecated Features,
     )
 
 $(H3 $(DEPNAME Implicit comparison of different enums))
-    $(P Currently, comparison of different enumerated type is allowed:
+    $(P Comparison of different enumerated type was allowed:
         ---
         enum Status
         {
@@ -95,14 +95,14 @@ $(H4 Rationale)
         ---
 
 $(H3 $(DEPNAME Implicit string concatenation))
-    $(P Currently, two adjacent strings are implicitly concatenated:
+    $(P Two adjacent strings were implicitly concatenated:
 
         ---
         string foo = "Hello" "World";
         ---
 
-        This feature is handy for a long string that spans multiple lines,
-        however it is possible to get the same behaviour explicitly by
+        This feature was handy for a long string that spans multiple lines,
+        however, it is possible to get the same behaviour explicitly by
         using the concatenation operator ('~'):
 
         ---