[core] Rework core implementation

Experimental re-implementation of core functionality with the aim:
- Depend only on the Python Standard Library for core
- If modules are missing elsewhere, *never* throw
- Unit test *everything*
- Cleaner and more minimal implementation
- Better integration points for existing implementations (charts,
  braille, etc.)
- Full backwards-compatibility with existing module system (except where
  modules can be vastly simplified)

tests/test_store.py

@@ -1,26 +0,0 @@
-# pylint: disable=C0103,C0111,W0703
-
-import unittest
-
-from bumblebee.store import Store
-
-class TestStore(unittest.TestCase):
-    def setUp(self):
-        self.store = Store()
-        self.anyKey = "some-key"
-        self.anyValue = "some-value"
-        self.unsetKey = "invalid-key"
-
-    def test_set_value(self):
-        self.store.set(self.anyKey, self.anyValue)
-        self.assertEquals(self.store.get(self.anyKey), self.anyValue)
-
-    def test_get_invalid_value(self):
-        result = self.store.get(self.unsetKey)
-        self.assertEquals(result, None)
-
-    def test_get_invalid_with_default_value(self):
-        result = self.store.get(self.unsetKey, self.anyValue)
-        self.assertEquals(result, self.anyValue)
-
-# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4