Added more all wizard necromancy spells and a spell factory.

tests/test_spells.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+from unittest import TestCase
+
+from dungeonsheets.spells import create_spell, Spell
+
+
+class TestSpells(TestCase):
+    """Tests for spells and spell-related activities."""
+    
+    def test_create_spell(self):
+        NewSpell = create_spell(name="Hello world")
+        self.assertTrue(issubclass(NewSpell, Spell))
+        self.assertEqual(NewSpell.name, 'Hello world')
+        spell = NewSpell()
+        print(spell, spell.__class__, type(spell))