Announcing Pyke 0.7 Release

[dangyogi]

This fixes a reported bug in Pyke. It also now requires that all of
your Pyke source files reside under a Python package directory (either
directly or indirectly). Corresponding to this change, the parameters
to knowledge_engine.engine have change and it no longer defaults to
the program's current working directory.

You must now enter the Python package name of the directory containing
your Pyke source files. See the new "Using Pyke" web page.

This is designed to make Pyke easier to run under Windows.