Update libsvm.jar for 3.37 release

Update the version number to 3.37

update wheel.yml to support pre-built wheels for newer python versions and various platforms on pypi

Align naming of prediction results in python interface

add file path and file object examples for svm_read_problem() in python/README

fix bug that can't run predict() without scipy installed in python interface

Update OS and Artifact settings for building wheel

Update Windows binaries and libsvm.jar for 3.36 release

Update the version number to 3.36

sort the column indices of the csr matrix to meet LIBSVM data requirement

support file objects as input to svm_read_problem() in commonutil.py

use module-level variable to keep a refence to ctypes print_null in svm.py

Restructure LIBSVM solver types and kernel types into seperate enum classes for python interface.

Update Windows binaries and libsvm.jar for 3.35 release

Update the version number to 3.35