Bug fixes and a couple of API changes

A number of invalid value passing bugs were fixed. In addition, iterators now accept RegistryKey objects as the parent to iterate over to avoid code duplication for accessing values.

Been reasonably solid for some time

This is the first version of this library. I've used the code elsewhere a few times and it's reasonably solid. I haven't bothered to version any releases before, so here is a jump to version 0.9 so that things can be tested and cleaned up before completely stabilizing to 1.0.

This release contains these features:

• Some unit tests, though not complete
• Read and write access to any hive, key, or value
• Supports automatic conversion from all registry value data types to PHP scalars
• Features lazy-loaded iterators over values, and recursive iterators over keys
• Ability to connect to hives on remote computers using remote WMI

A key safety feature planned for the future is running tests in a series of Vagrant virtual machines.