chore(*): Maintanance

[itsdevdom]

• Update dependencies (not Angular!)
• Migrate and cleanup config files
• Cleanup README and CHANGELOG
• Fix update-package script
• Introduce ESLint & Prettier
• Migrate from Travis CI to GitHub actions

[codecov]

Codecov Report

Merging #199 (f4f8257) into develop (fd1311a) will increase coverage by 0.01%.
The diff coverage is 99.04%.

@@             Coverage Diff             @@
##           develop     #199      +/-   ##
===========================================
+ Coverage    99.10%   99.11%   +0.01%     
===========================================
  Files           14       14              
  Lines          447      454       +7     
  Branches        71       76       +5     
===========================================
+ Hits           443      450       +7     
  Misses           4        4              

Impacted Files	Coverage Δ
...c/lib/components/notifier-container.component.html	100.00% <ø> (ø)
...src/lib/components/notifier-container.component.ts	97.70% <97.64%> (+0.08%)	⬆️
...src/lib/animation-presets/fade.animation-preset.ts	100.00% <100.00%> (ø)
...rc/lib/animation-presets/slide.animation-preset.ts	100.00% <100.00%> (ø)
...ib/components/notifier-notification.component.html	100.00% <100.00%> (ø)
.../lib/components/notifier-notification.component.ts	100.00% <100.00%> (ø)
...r-notifier/src/lib/models/notifier-config.model.ts	100.00% <100.00%> (ø)
...fier/src/lib/models/notifier-notification.model.ts	100.00% <100.00%> (ø)
...ojects/angular-notifier/src/lib/notifier.module.ts	100.00% <100.00%> (ø)
...ojects/angular-notifier/src/lib/notifier.tokens.ts	100.00% <100.00%> (ø)
... and 4 more