0.43.0
Several fixes to `WHEEL` metadata handling (#588)
Worked around a bizarre PyPy+Windows issue with bdist_egg
Used modern tmp_path instead of py.path based tmpdir (#513)
Skip the test_platform_linux32 test on non-Linux platforms
Fixed 32-bit platform tag detection (#560)
Don't wrap version specifiers in parens in Requires-Dist (#552)
Report stderr contents if `flit build` fails
Mark generated files as regular files (#511)