0.3.5: Fix bugs highlighted by tools (#92)

• Add a helper function to all Python SyclXXX classes to get the address of the base C API pointer as a long.
• Various code clean ups
  • Fix unhandled character
  • Remove unused imports
  • Fix class name duplication
• Rename PyDPPL to dpCtl in comments (function name renaming to come later)

0.3.4: Enhancements to dpctl device_context

• dpctl is now aware of DPC++ Sycl PI back-ends. The functionality is now exposed via the context interface.
• C API's queue manager was refactored to require back-end.
• Dump functions were enhanced to print back-end information.
• dpct's device_context now requires back-end, device-type, and device-id to be provided in a string format, e.g. opencl:gpu:0.
• dpctl gained support for unint_8 and unsigned long data types.
• Fixed some important bugs found by static analysis.
• Closed issues #51,#33, #53, #73, #95, #83.
• oneAPI Beta 10 tool chain support was added.

0.3.3

Add dpctl.get_curent_device_type() (#88)

0.3.2

Set _cpu_device and _gpu_device to None by default (#75)

0.3.1

Merge pull request #69 from IntelPython/add-get-include-and-include-h…

0.2.0: Merge pull request #24 from DmitryKizaev/legal-update-beta

License update for beta release