Release 0.1.4

What's Changed

• Code coverage and extra test
• Build and run tests with grcov by @conbrad in #1
• Add codecov badge by @conbrad in #2
• Test zero case for decimal to binary by @conbrad in #3
• Ignore bin directory for code coverage by @conbrad in #4

New Contributors

• @conbrad made their first contribution in #1

Full Changelog: https://github.com/conbrad/geohasher/commits/v0.1.4