Updates CRAN Comments

Merge pull request #3437 from sparklyr/updates

Prepares 1.8.6 release

Removes family section from clustering functions help

Merge pull request #3395 from sparklyr/rd-updates

Addresses new checkRd() issues

Addresses CRAN check documentation findings

CRAN submission accepted

Merge pull request #3328 from sparklyr/consist

Addresses method consistency issues in r-devel

Adds r-devel check

Merge pull request #3287 from sparklyr/new-release

CRAN release prep. Version bump, revdeps refresh, updates news

Addresses manual inspection feedback