hexyl: allar útgáfur og eldri útgáfur

What's Changed
- Enable custom colors with environment variables by @dan-hipschman in #248
- Add new braille character table and color schemes by @aticu in #247
- Add shell completion by @friedz in #251
- Add option to output result in C include file style (#242) by @wpcwzy in #246
- Fix some clippy warnings by @saulvaldelvira in #241
- Fix issue #238 by @ilmanzo in #239
- Fix CI by @dan-hipschman in #249
- Check if terminal_width is less than offset and return 1 (see #244) by @selfup in #245
- Add colors to --help by @starsep in #253
- Improve crate && fix CI by @Its-Just-Nans in #256
- feat: handle standard input "-" by @Its-Just-Nans in #257
New Contributors
- @saulvaldelvira made their first contribution in #241
- @ilmanzo made their first contribution in #239
- @dan-hipschman made their first contribution in #249
- @aticu made their first contribution in #247
- @friedz made their first contribution in #251
- @wpcwzy made their first contribution in #246
- @starsep made their first contribution in #253
- @Its-Just-Nans made their first contribution in #256
Full Changelog: v0.16.0...v0.17.0

v0.16.0
Features
- New --print-color-table option, see #229 (@sahinfalcon)
Bugfixes
- Throw an error when try to view a directory, see #234 (@Integral-Tech)
New Contributors
- @lunrenyi made their first contribution in #233
- @Integral-Tech made their first contribution in #234
- @sahinfalcon made their first contribution in #235
Full Changelog: https://github.com/sharkdp/hexyl/compare/v0.15.0...v0.16.0

Features
- Add codepage 1047 for EBCDIC, see #226 (@v1gnesh)
Other
- Rewrite CLI using the derive API, see #225 (@sorairolake)

Bugfixes
- Correctly handle discontinuous input (stdin), see #196 and #197 (@sharifhsn)