Merge pull request #4 from Fer-Bar/feature/new-fields-in-pet-admin

New fields is_neutered and gender in pet admin

pet/admin.py

@@ -7,7 +7,7 @@
 @admin.register(Pet)
 class PetAdmin(admin.ModelAdmin):
     search_fields = ["name", "owner"]
-    list_display = ("name", "breed", "age", "owner", "has_owner")
+    list_display = ("name", "breed", "gender", "age", "owner", "has_owner", "is_neutered")
     readonly_fields = ("age", )
     list_filter = (HasOwnerFilter,)