v1.2.0

Changelog

6effb9d Update README.md (#71)
9ea69d5 chore: drop go1.13 support (#72)
26799db chore: update swaggo/files (#65)
f33cf31 fix: handler reuse on different paths (#63)
c2972cd fix: it is better to return the error with c.Error (#61)
f82eac4 fix: panic when used with a non Flushing response.Writer (#64)
c536507 support multi instance of swag (#68)
26b75d2 suppress deprecation message during swag install (#59)