update new_features post 1.3.0 release

Author: craigbarratt

docs/new_features.rst

@@ -8,8 +8,12 @@ You can also install the master (head of tree) version from GitHub, either using
 Because pyscript has quite a few unit tests, generally the master version should work ok. But it's not
 guaranteed to work at any random time, and newly-added features might change.
 
-This release is 1.3.0, released on February 24, 2021.  Here is the `documentation
-<https://hacs-pyscript.readthedocs.io/en/1.3.0>`__ for this release.
+..
+    This release is 1.3.0, released on February 24, 2021.  Here is the `documentation
+    <https://hacs-pyscript.readthedocs.io/en/1.3.0>`__ for this release.
+
+The latest release is 1.3.0, released on February 24, 2021.  Here is the `documentation
+<https://hacs-pyscript.readthedocs.io/en/1.3.0>`__ for that release.
 
 Over time, the master (head of tree) version in GitHub will include new features and bug fixes.
 Here is the `latest documentation <https://hacs-pyscript.readthedocs.io/en/latest>`__ if you want
@@ -18,3 +22,23 @@ to see the development version of the documentation.
 If you want to see development progress since 1.3.0, see
 `new features <https://hacs-pyscript.readthedocs.io/en/latest/new_features.html>`__ in the latest
 documentation, or look at the `GitHub repository <https://github.com/custom-components/pyscript>`__.
+
+Planned new features post 1.3.0 include:
+
+- Consider supporting the built-in functions that do I/O, such as ``open``, ``read`` and ``write``, which
+  are not currently supported to avoid I/O in the main event loop, and also to avoid security issues if people
+  share pyscripts. The ``print`` function only logs a message, rather than implements the real ``print`` features,
+  such as specifying an output file handle. Support might be added in the future using an executor job, perhaps
+  enabled when ``allow_all_imports`` is set.
+
+The new features since 1.3.0 in master include:
+
+None yet.
+
+Breaking changes since 1.3.0 include:
+
+None yet.
+
+Bug fixes since 1.3.0 include:
+
+None yet.