[ANN] idnx 0.1.0 released

idnx 0.1.0 has been released.

Idnx.to_punycode("bücher.de <http://bücher.de>")

idnx is a ruby library for decoding Internationalized domain names into
Punycode.

It uses libidn2 (or IdForAscii on Windows) to support IDNA2008-compliant
names.

## [0.1.0] - 2021-09-04

### improvements

It ships RBS signatures for the main public API.

### compliance

`idnx` ships with a pure ruby punycode implementation (IDNA 2003), which
will get loaded when `libidn2` isn't installed in the system. This was
necessary for license compatibility, given that Apache 2.0 projects can
rely on GPL dependencies (such as `libidn2`) but nnot exclusively.