v1.4.0

What's Changed

• Update example_usage.png by @ericsmacedo in #11
• Remove unused badges by @ericsmacedo in #12
• Fixes typos in the documentation by @ericsmacedo in #13
• Updates markers used for harmonics to start with H by @ericsmacedo in #14
• Fix function to return empy array instead of none by @ericsmacedo in #16
• Fix/fs2 tone detection by @ericsmacedo in #17
• update examples automatically by @ericsmacedo in #18

Full Changelog: v1.3.0...v1.4.0