chore(*): Upgrade dev dependencies, fix build & tests

[itsdevdom]

• Upgrade dev dependencies to the latest versions, except
  • Zone.js (seems to not work properly within unit tests, in particular when using fakeAsync with tick)
  • Angular (the compiler seems to not produce the correct files in 4.2 but does in 4.1)
• Add missing dev dependency
• Upgrade NodeJS from v7 to v8
• Move and fix Jest configuration
• Fix TypeScript configuration
• Fix Rollup configuration
• Add npm package lockfile
• Update Travis CI configuration

[codecov]

Codecov Report

Merging #33 into develop will decrease coverage by 0.1%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop      #33      +/-   ##
===========================================
- Coverage    99.12%   99.01%   -0.11%     
===========================================
  Files           12       14       +2     
  Lines          457      408      -49     
  Branches        74       65       -9     
===========================================
- Hits           453      404      -49     
  Misses           4        4

Impacted Files	Coverage Δ
src/lib/src/services/notifier-timer.service.ts	100% <ø> (ø)	⬆️
...lib/src/components/notifier-container.component.ts	97.5% <0%> (-0.15%)	⬇️
.../src/components/notifier-notification.component.ts	100% <0%> (ø)	⬆️
src/lib/src/services/notifier.service.ts	100% <0%> (ø)	⬆️
src/lib/src/services/notifier-animation.service.ts	100% <0%> (ø)	⬆️
src/lib/src/models/notifier-config.model.ts	100% <0%> (ø)	⬆️
...lib/src/animation-presets/fade.animation-preset.ts	100% <0%> (ø)	⬆️
src/lib/src/notifier.module.ts	100% <0%> (ø)	⬆️
src/lib/src/models/notifier-notification.model.ts	100% <0%> (ø)	⬆️
... and 4 more

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