Add tomorrow to repo rather than dependency

eos/saveddata/crest.py

@@ -21,7 +21,7 @@ import urllib
 from cStringIO import StringIO
 
 from sqlalchemy.orm import reconstructor
-from tomorrow import threads
+from eos.tomorrow import threads
 
 
 class Crest(object):

eos/tomorrow.py

@@ -0,0 +1,44 @@
+# https://github.com/madisonmay/Tomorrow
+
+from functools import wraps
+
+from concurrent.futures import ThreadPoolExecutor
+
+
+class Tomorrow():
+
+    def __init__(self, future, timeout):
+        self._future = future
+        self._timeout = timeout
+
+    def __getattr__(self, name):
+        result = self._wait()
+        return result.__getattribute__(name)
+
+    def _wait(self):
+        return self._future.result(self._timeout)
+
+
+def async(n, base_type, timeout=None):
+    def decorator(f):
+        if isinstance(n, int):
+            pool = base_type(n)
+        elif isinstance(n, base_type):
+            pool = n
+        else:
+            raise TypeError(
+                "Invalid type: %s"
+                % type(base_type)
+            )
+        @wraps(f)
+        def wrapped(*args, **kwargs):
+            return Tomorrow(
+                pool.submit(f, *args, **kwargs),
+                timeout=timeout
+            )
+        return wrapped
+    return decorator
+
+
+def threads(n, timeout=None):
+    return async(n, ThreadPoolExecutor, timeout)