Bugfix release
- pypy support to native profiling
- dumping native symbols is not implemented in C (to not maintain a C and a Python version)
- sample_stack_now has an optional paramter 'skip' which skips a certain amount of native frames
- win64 + cpython 3.6 compilation issue solved
- dynamic loading of libunwind symbols (to support pypy)
- added sqlite sample file
- do not overwrite base_headers for http requests if authorization is provided