v0.5.0

What's Changed

• Bump version to 0.4.0; doc fixes for the release by @chrisdoehring in #34
• Read surface: site-time windows, counts, columns, exports, --where (P3 otus parity) by @chrisdoehring in #36
• Spec: compare against the otus er-cli and propose P3 by @chrisdoehring in #35
• CONTRIBUTING: the process we adopted after PR 36 by @chrisdoehring in #37
• Bump version to 0.5.0 by @chrisdoehring in #40

Full Changelog: v0.4.0...v0.5.0