update changelog

Author: timfel

CHANGELOG.md

@@ -3,6 +3,17 @@
 This changelog summarizes major changes between GraalVM versions of the Python
 language runtime. The main focus is on user-observable behavior of the engine.
 
+## Version 1.0.0 RC14
+
+* Mark a subset of the Graal Python launcher options as "stable". All other options are subject to change and need to be unlocked explicitly on the commandline.
+* Automatically install pip when creating a venv. The socket and ssl libraries are still not functional, so pip can only install from local sources or wheels.
+* Update the standard library to Python 3.7.0 from 3.6.5.
+* Support the `-I` flag to ignore the user environment and not add the working directory to `sys.path`
+* Fix an error preventing usage of the memtracer tool. If an object raised an exception in it's `__repr__` method, it would abort the execution.
+* Fix issues around not being able to modify function defaults, keyword defaults, or re-defining a function with a different closure.
+* Fix continuation prompt in the interactive Python shell when an incomplete statement was typed. Before it raised and ignored a SyntaxError.
+* Fix frame restarting of Python functions in the Chrome debugger. Before, functions with closures would have their cells accidentally cleared.
+
 ## Version 1.0.0 RC13
 
 * Support marshal.dumps and marshal.loads for code objects and some other built-in objects