chore: bump version

chore: fix incorrectly sorted aliases

chore: bump version in mix.exs

fix: aliases compile error and ensure convertible modules are loaded …

…in `Tint.convert/2`

chore: bump version

chore: bump version

docs: improve docs of several modules

feat: CIELAB colorspace and CIEDE2000 distance algorithm (#1)

* feat: add CIELAB and DIN99 colorspaces and distance algorithms

* fix: a couple of sigil tests

* chore: bump version to 0.4.0

* test: add nearest color algorithm test to CIELAB colorspace struct

* feat: add `RGB.grayscale?/1`

* feat: Add color analytic functions

* docs: update readme with supported color spaces

* feat: add rose color category to RGB module

* fix: improve color categories

* WIP: add color table script

* WIP: add LCh color space

* WIP: update color table script

* feat: add Delta E CIEDE2000 algorithm

* fix: CIELAB to LCh conversion

* add CIEDE2000 distance algorithm

* fix: CIEDE2000 algorithm

* fix: CIEDE2000 distance calculation

* refactor: remove LCh colorspace

* refactor: move distance algorithms to another folder

* fix: tests

* refactor: clean up

* refactor: rename CIELAB to Lab

* refactor: restructure protocols

* docs: improve readme

* fix: format in test file

* refactor: distance algorithms behavior

* feat: add distance cache

* fix: improve performance and allow DistanceCache to be not running

* fix: improve precision for XYZ colorspace

* feat: add `HSV.grayscale?/1`

* feat: add `RGB.grayish?/2`

* fix: use `Mix.Config` rather than `Config`

* test: implement missing test for all modules

* fix: allow distance algorithms to get any color type as first arg

* docs: add missing docs

* chore: bump version

* chore: remove script

* fix: docs since

* chore: remove Elixir 1.7 from officially supported versions

* chore: temporarily remove Elixir 1.10 from travis config

chore: Bump version

improve(docs): Update sigil docs