coverage-3.0b3

• Added parameters to coverage.__init__ for options that had been set on the coverage object itself.
• Added clear_exclude() and get_exclude_list() methods for programmatic manipulation of the exclude regexes.
• Added coverage.load() to read previously-saved data from the data file.
• Improved the finding of code files. For example, .pyc files that have been installed after compiling are now located correctly. Thanks, Detlev Offenbach.
• When using the object API (that is, constructing a coverage() object), data is no longer saved automatically on process exit. You can re-enable it with the auto_data=True parameter on the coverage() constructor. The module-level interface still uses automatic saving.