Add attr= support to create_channel. Resolve #3078

docs/source/Contribs/Contrib-Traits.md

@@ -440,6 +440,45 @@ class Character(DefaultCharacter):
 
 ```
 
+## Adding additional TraitHandlers
+
+Sometimes, it is easier to top-level classify traits, such as stats, skills, or other categories of traits you want to handle independantly of each other. Here is an example showing an example on the object typeclass, expanding on the first installation example:
+
+```python
+# mygame/typeclasses/objects.py
+
+from evennia import DefaultCharacter
+from evennia.utils import lazy_property
+from evennia.contrib.rpg.traits import TraitHandler
+
+# ...
+
+class Character(DefaultCharacter):
+    ...
+    @lazy_property
+    def traits(self):
+        # this adds the handler as .traits
+        return TraitHandler(self)
+    
+    @lazy_property
+    def stats(self):
+        # this adds the handler as .stats
+        return TraitHandler(self, db_attribute_key="stats")
+
+    @lazy_property
+    def skills(self):
+        # this adds the handler as .skills
+        return TraitHandler(self, db_attribute_key="skills")
+
+
+    def at_object_creation(self):
+        # (or wherever you want)
+        self.stats.add("str", "Strength", trait_type="static", base=10, mod=2)
+        self.traits.add("hp", "Health", trait_type="gauge", min=0, max=100)
+        self.skills.add("hunting", "Hunting Skill", trait_type="counter",
+                        base=10, mod=1, min=0, max=100)
+```
+
 
 ----
 

docs/source/Contribs/Contrib-XYZGrid.md

@@ -1354,14 +1354,9 @@ rooms without editing the map files outside of the game.
 ## Installation
 
 1. If you haven't before, install the extra contrib requirements.
-<<<<<<< HEAD
    You can do so by doing `pip install evennia[extra]`, or if you used `git` to
    install, do `pip install --upgrade -e .[extra]` from the `evennia/` repo
    folder.
-=======
-   You can do so by doing `pip install evennia[extra]` from the
-   `evennia/` folder.
->>>>>>> f4253e600eac5c55445e8cb599e49d5cf060494a
 2. Import and add the `evennia.contrib.grid.xyzgrid.commands.XYZGridCmdSet` to the
    `CharacterCmdset` cmdset in `mygame/commands.default_cmds.py`. Reload
    the server. This makes the `map`, `goto/path` and modified `teleport`  and