neurostuff/PyMARE: 0.0.3

<!-- Release notes generated using configuration in .github/release.yml at master --> This release removes 3.5 support and temporarily drops StanMetaRegression support for Python 3.7+ (just until we can figure out how to use PyStan3).

• Remove 3.5 support, add tests on other Python versions, and break StanMetaRegression for Python 3.7+ by @tsalo in https://github.com/neurostuff/PyMARE/pull/66 ### 🐛 Bug Fixes
• Remove use of deprecated sympy.core.compatibility module by @tsalo in https://github.com/neurostuff/PyMARE/pull/81 ### Other Changes
• Simplify packaging and update versioneer by @tsalo in https://github.com/neurostuff/PyMARE/pull/69
• Run unit tests automatically every Sunday by @tsalo in https://github.com/neurostuff/PyMARE/pull/77
• Improve auto-documentation templates. by @tsalo in https://github.com/neurostuff/PyMARE/pull/78
• Run updated version of black to fix CI by @tsalo in https://github.com/neurostuff/PyMARE/pull/79

Full Changelog: https://github.com/neurostuff/PyMARE/compare/0.0.2...0.0.3