Backport PR #315: Start writing release notes for 5.2

Author: takluyver

docs/changelog.rst

@@ -4,6 +4,48 @@
 Changes in Jupyter Client
 =========================
 
+5.2
+===
+
+`5.2 on GitHub <https://github.com/jupyter/jupyter_client/milestones/5.2>`__
+
+- Define Jupyter protocol version 5.3:
+
+  - Kernels can now opt to be interrupted by a message sent on the control channel
+    instead of a system signal. See :ref:`kernelspecs` and :ref:`msging_interrupt`
+    (:ghpull:`294`).
+
+- New ``jupyter kernel`` command to launch an installed kernel by name
+  (:ghpull:`240`).
+- Kernelspecs where the command starts with e.g. ``python3`` or
+  ``python3.6``—matching the version ``jupyter_client`` is running on—are now
+  launched with the same Python executable as the launching process (:ghpull:`306`).
+  This extends the special handling of ``python`` added in 5.0.
+- Command line arguments specified by a kernelspec can now include
+  ``{resource_dir}``, which will be substituted with the kernelspec resource
+  directory path when the kernel is launched (:ghpull:`289`).
+- Kernelspecs now have an optional ``metadata`` field to hold arbitrary metadata
+  about kernels—see :ref:`kernelspecs` (:ghpull:`274`).
+- Make the ``KernelRestarter`` class used by a ``KernelManager`` configurable
+  (:ghpull:`290`).
+- When killing a kernel on Unix, kill its process group (:ghpull:`314`).
+- If a kernel dies soon after starting, reassign random ports before restarting
+  it, in case one of the previously chosen ports has been bound by another
+  process (:ghpull:`279`).
+- Avoid unnecessary filesystem operations when finding a kernelspec with
+  :meth:`.KernelSpecManager.get_kernel_spec` (:ghpull:`311`).
+- :meth:`.KernelSpecManager.get_all_specs` will no longer raise an exception on
+  encountering an invalid ``kernel.json`` file. It will raise a warning and
+  continue (:ghpull:`310`).
+- Check for non-contiguous buffers before trying to send them through ZMQ
+  (:ghpull:`258`).
+- Compatibility with upcoming Tornado version 5.0 (:ghpull:`304`).
+- Simplify setup code by always using setuptools (:ghpull:`284`).
+- Soften warnings when setting the sticky bit on runtime files fails
+  (:ghpull:`286`).
+- Various corrections and improvements to documentation.
+
+
 5.1
 ===
 

docs/conf.py

@@ -34,6 +34,7 @@
     'sphinx.ext.autodoc',
     'sphinx.ext.intersphinx',
     'sphinx.ext.napoleon',
+    'sphinxcontrib_github_alt',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -55,6 +56,8 @@
 copyright = '2015, Jupyter Development Team'
 author = 'Jupyter Development Team'
 
+github_project_url = "https://github.com/jupyter/jupyter_client"
+
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.

docs/environment.yml

@@ -8,3 +8,5 @@ dependencies:
 - jupyter_core
 - sphinx>=1.3.6
 - sphinx_rtd_theme
+- pip:
+  - sphinxcontrib_github_alt