fixed unicode output

[swillner]

The unicode output did not work for me the way it was implementet before. Also, wchar/wstring should not be needed since the bar string is pushed to output bytewise anyway...

[swillner]

What is your further plan in development of tqdm.cpp?

[casperdcl]

plan would be to find time to first get to v5 for tqdm (python), then get a first release for tqdm.cpp by implementing most of the python version's functionality. Thanks for your contributions! Hopefully we'll get there soon!