Improved output handling on Windows #196
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Uses the Windows API to set the ENABLE_VIRTUAL_TERMINAL_PROCESSING flag for proper ANSI code handling, based off discussion from https://stackoverflow.com/questions/36760127
Also sets convert=True in the colorama initialization. This seems to improve compatibility when redirecting/piping output, particularly for line breaks.
(PowerShell 7+ Note: When piping the output of tldr.py, you should have $PSStyle.OutputRendering set to ANSI if you want colors to display.)
Fixes #178