Version bump for NPM

Fixed tags for NPM.

Remove Babel, rebuild test infrastructure

Improves developer experience by:

• Removing Babel
• Using C8 and Mocha for native ES import testing
• Remove Grunt in favor of some simpler scripts in package.json
• Build a CJS module as part of the build process

Security releases and NOAA testing

• Updated URLs for NOAA's API for the testing service
• Security update to developer dependencies

Tide extreme fidelity

Tidal extreme calculations are expensive, so you can now use the timeFidelity option to define how exact you want the high/low tide dates to be.