Upgrade to angular 8

[marjan-georgiev]

What kind of change does this PR introduce? (check one with "x")

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior? (You can also link to an open issue here)

What is the new behavior?

fixes #1694
fixes: #1693

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

[whyboris]

Can confirm:

• cloned the repository (clean copy)
• checked out ng8 branch
• ran npm install (no errors)
• ran npm start -- was able to see the page with all the different types of datatable
• ran npm test -- 126 SUCCESS (no failed, 3 skipped, 69.5% statement code coverage)

🚀 🎉 🙌

[whyboris]

ps -- npm install gave this warning:

found 4 vulnerabilities (2 low, 1 moderate, 1 high)
  run `npm audit fix` to fix them, or `npm audit` for details

Running npm audit fix resulted in:

fixed 0 of 4 vulnerabilities in 15965 scanned packages
  1 vulnerability required manual review and could not be updated
  2 package updates for 3 vulns involved breaking changes

Something to keep in mind for the future 👌

[whyboris]

• Cloned repository
• checked out ng8 branch
• ran npm install
• ran npm start 👌(got working app)
• ran npm test 👌(got no failing tests)

Everything seems to be working great 💯

[marjan-georgiev]

@whyboris thanks for testing!

Merging. Will release 15.0.0 shortly.

[whyboris]

Thank you @marjan-georgiev -- I pulled in your release and our production app is now fully working with Angular 8 🎉 🙇 🤝
Cheers!

[marjan-georgiev]

Great to hear!

[TidianeChelsea]

Thank You @marjan-georgiev 🎉
All working GREAT.

[bleuscyther]

Nice! just before release 🎉

[TidianeChelsea]

Hello @marjan-georgiev

I just noticed that the headerComponent of DatatableComponent is always undefined for the new version.

What may be the problem?

Thanks.