add deprecation warnings for exec.final and metadata.bypost

gallery_dl/postprocessor/exec.py

@@ -41,6 +41,10 @@ class ExecPP(PostProcessor):
         events = options.get("event")
         if events is None:
             events = ("after",)
+            if options.get("final"):
+                self.log.warning("'final' is deprecated, "
+                                 "use '\"event\": \"finalize\"' instead")
+                events = ("finalize",)
         elif isinstance(events, str):
             events = events.split(",")
         for event in events:

gallery_dl/postprocessor/metadata.py

@@ -55,6 +55,10 @@ class MetadataPP(PostProcessor):
         events = options.get("event")
         if events is None:
             events = ("file",)
+            if options.get("bypost"):
+                self.log.warning("'bypost' is deprecated, use '\"event\": "
+                                 "\"post\"' and 'filename' instead")
+                events = ("metadata",)
         elif isinstance(events, str):
             events = events.split(",")
         for event in events: