Changed zipline -> catalyst import paths

* Updated cython build scripts
 * Updated setup.py to to install catalyst package
 * Updated momentum example to use catalyst package
 * catalyst executable now supports loading pipelines from multiple bundles

catalyst/api.py

@@ -0,0 +1,59 @@
+#
+# Copyright 2014 Quantopian, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Note that part of the API is implemented in TradingAlgorithm as
+# methods (e.g. order). These are added to this namespace via the
+# decorator ``api_method`` inside of algorithm.py.
+from .finance.asset_restrictions import (
+    Restriction,
+    StaticRestrictions,
+    HistoricalRestrictions,
+    RESTRICTION_STATES,
+)
+from .finance import commission, execution, slippage, cancel_policy
+from .finance.cancel_policy import (
+    NeverCancel,
+    EODCancel
+)
+from .finance.slippage import (
+    FixedSlippage,
+    VolumeShareSlippage,
+)
+from .utils import math_utils, events
+from .utils.events import (
+    calendars,
+    date_rules,
+    time_rules
+)
+
+__all__ = [
+    'EODCancel',
+    'FixedSlippage',
+    'NeverCancel',
+    'VolumeShareSlippage',
+    'Restriction',
+    'StaticRestrictions',
+    'HistoricalRestrictions',
+    'RESTRICTION_STATES',
+    'cancel_policy',
+    'commission',
+    'date_rules',
+    'events',
+    'execution',
+    'math_utils',
+    'slippage',
+    'time_rules',
+    'calendars',
+]