Added working draft of changelog and release task for markdown conversion

Signed-off-by: Dan Ryan <dan@danryan.co>

CHANGELOG.draft.rst

@@ -0,0 +1,50 @@
+2018.7.1.dev0 (2018-07-15)
+==========================
+
+
+Features & Improvements
+-----------------------
+
+- Updated test-pypi addon to better support json-api access (forward compatibility).
+  Improved testing process for new contributors.  `#2568 <https://github.com/pypa/pipenv/issues/2568>`_
+  
+
+Behavior Changes
+----------------
+
+- Virtual environment activation for ``run`` is revised to improve interpolation
+  with other Python discovery tools.  `#2503 <https://github.com/pypa/pipenv/issues/2503>`_
+  
+- Improve terminal coloring to display better in Powershell.  `#2511 <https://github.com/pypa/pipenv/issues/2511>`_
+  
+- Invoke ``virtualenv`` directly for virtual environment creation, instead of depending on ``pew``.  `#2518 <https://github.com/pypa/pipenv/issues/2518>`_
+  
+- ``pipenv --help`` will now include short help descriptions.  `#2542 <https://github.com/pypa/pipenv/issues/2542>`_
+  
+
+Bug Fixes
+---------
+
+- Fix subshell invocation on Windows for Python 2.  `#2515 <https://github.com/pypa/pipenv/issues/2515>`_
+  
+- Fixed a bug which sometimes caused pipenv to throw a ``TypeError`` or to run into encoding issues when writing lockfiles on python 2.  `#2561 <https://github.com/pypa/pipenv/issues/2561>`_
+  
+- Improve quoting logic for ``pipenv run`` so it works better with Windows
+  built-in commands.  `#2563 <https://github.com/pypa/pipenv/issues/2563>`_
+  
+- Fixed a bug related to parsing vcs requirements with both extras and subdirectory fragments.
+  Corrected an issue in the ``requirementslib`` parser which led to some markers being discarded rather than evaluated.  `#2564 <https://github.com/pypa/pipenv/issues/2564>`_
+  
+
+Vendored Libraries
+------------------
+
+- Pew is no longer vendored. Entry point ``pewtwo``, packages ``pipenv.pew`` and
+  ``pipenv.patched.pew`` are removed.  `#2521 <https://github.com/pypa/pipenv/issues/2521>`_
+  
+
+Improved Documentation
+----------------------
+
+- Simplified the test configuration process.  `#2568 <https://github.com/pypa/pipenv/issues/2568>`_
+

tasks/release.py

@@ -41,7 +41,7 @@ def drop_dist_dirs(ctx):
 def build_dists(ctx):
     drop_dist_dirs(ctx)
     log('Building sdist using %s ....' % sys.executable)
-    for py_version in ['2.7', '3.6']:
+    for py_version in ['2.7', '3.6', '3.7']:
         env = {'PIPENV_PYTHON': py_version}
         ctx.run('pipenv install --dev', env=env)
         if py_version == '3.6':
@@ -56,6 +56,12 @@ def upload_dists(ctx):
     ctx.run('twine upload dist/*')
 
 
+@invoke.task
+def generate_markdown(ctx):
+    log('Generating markdown from changelog...')
+    ctx.run('pandoc CHANGELOG.rst -f rst -t markdown -o CHANGELOG.md')
+
+
 @invoke.task
 def generate_changelog(ctx, commit=False, draft=False):
     log('Generating changelog...')