QuantConnect
diff --git a/.bumpversion.cfg b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 2.4.0.dev0
+current_version = 2.0.5.0
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\.(?P<release>[a-z]+)(?P<dev>\d+))?
 serialize = 
 	{major}.{minor}.{patch}.{release}{dev}

diff --git a/.travis.yml b/.travis.yml
@@ -22,7 +22,6 @@ matrix:
             - dotnet-hostfxr-2.0.0
             - dotnet-runtime-2.0.0
             - dotnet-sdk-2.0.0
-
     - python: 3.4
       env: *xplat-env
       addons: *xplat-addons
@@ -34,24 +33,9 @@ matrix:
     - python: 3.6
       env: *xplat-env
       addons: *xplat-addons
-
-    - python: 3.7
+    - python: "3.7-dev"
       env: *xplat-env
-      dist: xenial
-      sudo: true
-      addons: &xplat-addons-xenial
-        apt:
-          sources:
-          - sourceline: deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-ubuntu-xenial-prod xenial main
-            key_url: https://packages.microsoft.com/keys/microsoft.asc
-          - sourceline: deb https://download.mono-project.com/repo/ubuntu stable-xenial main
-            key_url: http://keyserver.ubuntu.com/pks/lookup?op=get&search=0xA6A19B38D3D831EF
-          packages:
-            - mono-devel
-            - ca-certificates-mono
-            - dotnet-hostfxr-2.0.0
-            - dotnet-runtime-2.0.0
-            - dotnet-sdk-2.0.0
+      addons: *xplat-addons
 
 # --------------------- Classic builds ------------------------
     - python: 2.7
@@ -68,18 +52,15 @@ matrix:
     - python: 3.6
       env: *classic-env
 
-    - python: 3.7
+    - python: "3.7-dev"
+      env: *classic-env
+
+  allow_failures:
+    - python: "3.7-dev"
+      env: *xplat-env
+
+    - python: "3.7-dev"
       env: *classic-env
-      dist: xenial
-      sudo: true
-      addons:
-        apt:
-          sources:
-            - sourceline: deb http://download.mono-project.com/repo/ubuntu xenial main
-              key_url: http://keyserver.ubuntu.com/pks/lookup?op=get&search=0xA6A19B38D3D831EF
-          packages:
-            - mono-devel
-            - ca-certificates-mono
 
 env:
   global:

diff --git a/AUTHORS.md b/AUTHORS.md
@@ -14,7 +14,6 @@
 
 -   Alexandre Catarino([@AlexCatarino](https://github.com/AlexCatarino))
 -   Arvid JB ([@ArvidJB](https://github.com/ArvidJB))
--   Benoît Hudson ([@benoithudson](https://github.com/benoithudson))
 -   Bradley Friedman ([@leith-bartrich](https://github.com/leith-bartrich))
 -   Callum Noble ([@callumnoble](https://github.com/callumnoble))
 -   Christian Heimes ([@tiran](https://github.com/tiran))
@@ -23,12 +22,10 @@
 -   Daniel Fernandez ([@fdanny](https://github.com/fdanny))
 -   Daniel Santana ([@dgsantana](https://github.com/dgsantana))
 -   Dave Hirschfeld ([@dhirschfeld](https://github.com/dhirschfeld))
--   David Lassonde ([@lassond](https://github.com/lassond))
 -   David Lechner ([@dlech](https://github.com/dlech))
 -   Dmitriy Se ([@dmitriyse](https://github.com/dmitriyse))
 -   He-chien Tsai ([@t3476](https://github.com/t3476))
 -   Ivan Cronyn ([@cronan](https://github.com/cronan))
--   Jan Krivanek ([@jakrivan](https://github.com/jakrivan))
 -   Jeff Reback ([@jreback](https://github.com/jreback))
 -   Joe Frayne ([@jfrayne](https://github.com/jfrayne))
 -   John Burnett ([@johnburnett](https://github.com/johnburnett))
@@ -42,8 +39,7 @@
 -   Sam Winstanley ([@swinstanley](https://github.com/swinstanley))
 -   Sean Freitag ([@cowboygneox](https://github.com/cowboygneox))
 -   Serge Weinstock ([@sweinst](https://github.com/sweinst))
--   Simon Mourier ([@smourier](https://github.com/smourier))
--   Viktoria Kovescses ([@vkovec](https://github.com/vkovec))
+-   Victor Milovanov([@lostmsu](https://github.com/lostmsu))
 -   Ville M. Vainio ([@vivainio](https://github.com/vivainio))
 -   Virgil Dupras ([@hsoft](https://github.com/hsoft))
 -   Wenguang Yang ([@yagweb](https://github.com/yagweb))

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -8,35 +8,26 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 ## [unreleased][]
 
 ### Added
-
 -   Added support for embedding python into dotnet core 2.0 (NetStandard 2.0)
 -   Added new build system (pythonnet.15.sln) based on dotnetcore-sdk/xplat(crossplatform msbuild).
     Currently there two side-by-side build systems that produces the same output (net40) from the same sources.
     After a some transition time, current (mono/ msbuild 14.0) build system will be removed.
 -   NUnit upgraded to 3.7 (eliminates travis-ci random bug)
--   Added C# `PythonEngine.AddShutdownHandler` to help client code clean up on shutdown.
 -   Added `clr.GetClrType` ([#432][i432])([#433][p433])
 -   Allowed passing `None` for nullable args ([#460][p460])
 -   Added keyword arguments based on C# syntax for calling CPython methods ([#461][p461])
 -   Catches exceptions thrown in C# iterators (yield returns) and rethrows them in python ([#475][i475])([#693][p693])
 -   Implemented GetDynamicMemberNames() for PyObject to allow dynamic object members to be visible in the debugger ([#443][i443])([#690][p690])
 -   Incorporated reference-style links to issues and pull requests in the CHANGELOG ([#608][i608])
--   Added detailed comments about aproaches and dangers to handle multi-app-domains ([#625][p625])
--   Python 3.7 support, builds and testing added. Defaults changed from Python 3.6 to 3.7 ([#698][p698])
+-   Added PyObject finalizer support, Python objects referred by C# can be auto collect now.
 
 ### Changed
-
--   Reattach python exception traceback information (#545)
--   PythonEngine.Intialize will now call `Py_InitializeEx` with a default value of 0, so signals will not be configured by default on embedding. This is different from the previous behaviour, where `Py_Initialize` was called instead, which sets initSigs to 1. ([#449][i449])
+-   PythonException included C# call stack
+-   improved performance of calls from Python to C#
 
 ### Fixed
 
--   Fixed secondary PythonEngine.Initialize call, all sensitive static variables now reseted.
-    This is a hidden bug. Once python cleaning up enough memory, objects from previous engine run becomes corrupted. ([#534][p534])
 -   Fixed Visual Studio 2017 compat ([#434][i434]) for setup.py
--   Fixed crashes when integrating pythonnet in Unity3d ([#714][i714]),
-    related to unloading the Application Domain
--   Fixed interop methods with Py_ssize_t. NetCoreApp 2.0 is more sensitive than net40 and requires this fix. ([#531][p531])
 -   Fixed crash on exit of the Python interpreter if a python class
     derived from a .NET class has a `__namespace__` or `__assembly__`
     attribute ([#481][i481])
@@ -48,8 +39,6 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 -   Fixed errors breaking .NET Remoting on method invoke ([#276][i276])
 -   Fixed PyObject.GetHashCode ([#676][i676])
 -   Fix memory leaks due to spurious handle incrementation ([#691][i691])
--   Fix spurious assembly loading exceptions from private types ([#703][i703])
--   Fix inheritance of non-abstract base methods ([#755][i755])
 
 
 ## [2.3.0][] - 2017-03-11
@@ -607,7 +596,6 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 
 [1.0.0]: https://github.com/pythonnet/pythonnet/releases/tag/1.0
 
-[i714]: https://github.com/pythonnet/pythonnet/issues/714
 [i608]: https://github.com/pythonnet/pythonnet/issues/608
 [i443]: https://github.com/pythonnet/pythonnet/issues/443
 [p690]: https://github.com/pythonnet/pythonnet/pull/690
@@ -698,9 +686,4 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 [p225]: https://github.com/pythonnet/pythonnet/pull/225
 [p78]: https://github.com/pythonnet/pythonnet/pull/78
 [p163]: https://github.com/pythonnet/pythonnet/pull/163
-[p625]: https://github.com/pythonnet/pythonnet/pull/625
 [i131]: https://github.com/pythonnet/pythonnet/issues/131
-[p531]: https://github.com/pythonnet/pythonnet/pull/531
-[i755]: https://github.com/pythonnet/pythonnet/pull/755
-[p534]: https://github.com/pythonnet/pythonnet/pull/534
-[i449]: https://github.com/pythonnet/pythonnet/issues/449
diff --git a/NuGet.config b/NuGet.config
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <packageSources>
     <add key="dot-net MyGet Feed" value="https://dotnet.myget.org/F/dotnet-core/api/v3/index.json" protocolVersion="3"/>

diff --git a/appveyor.yml b/appveyor.yml
@@ -23,19 +23,10 @@ environment:
       BUILD_OPTS: --xplat
     - PYTHON_VERSION: 3.6
       BUILD_OPTS: --xplat
-    - PYTHON_VERSION: 3.7
-      BUILD_OPTS: --xplat
     - PYTHON_VERSION: 2.7
     - PYTHON_VERSION: 3.4
     - PYTHON_VERSION: 3.5
     - PYTHON_VERSION: 3.6
-    - PYTHON_VERSION: 3.7
-
-matrix:
-    allow_failures:
-      - PYTHON_VERSION: 3.4
-        BUILD_OPTS: --xplat
-      - PYTHON_VERSION: 3.4
 
 init:
   # Update Environment Variables based on matrix/platform

diff --git a/conda.recipe/meta.yaml b/conda.recipe/meta.yaml
@@ -1,6 +1,6 @@
 package:
   name: pythonnet
-  version: "2.4.0.dev0"
+  version: "2.0.5.0"
 
 build:
   skip: True  # [not win]