Updated to RxJS 6

[benjaminforras]

Neccessary when using with Angular 6

[CLAassistant]

All committers have signed the CLA.

[gjdev]

High TryHardHood, thank you for your contribution!
It looks like the changes to bundle/package-lock.json are not really needed for compatibility with RXJS 6 (?). If you could remove the changes to the package-lock.json from your PR, I would be glad too merge the rest of the PR.

Thanks again!

[benjaminforras]

Reverted package-lock.json

[gjdev]

I've tested this PR with angular 5.2.10 and rxjs 5.5.5. Regretfully this pulls in almost all of rxjs (193kb instead of 49kb without this change) on webpack builds, even with three shaking enabled. It seems that with rxjs 5 the webpack toolchain is not able to treeshake the changed import statements. So for now, as is, this blocks us from merging the change.

We are in the proces of updating the material-components dependency to the latest version. After that I will retest with angular 6 and RXJS 6. If that results in smaller RXJS sizes, I will merge anyway, and document this as a reason to upgrade Angular & RXJS for our users.

[gjdev]

@TryHardDood I have applied the changes in #611. (Due to conflicts and the removal of your fork, I could net get this PR merged, so created a new one)