feature: improve get_profile and get_company

[jareducherek]

1. get_profile now gets skills and full experience history using the paging
2. get_company can now use the urn
3. search_company has added params

[jareducherek]

@tomquirk happy to finalize this PR if you find it interesting enough to add, let me know!

[Photon48]

OMG, i NEED this commit. The experience history is currently incomplete. If you can finalize this, i would be very grateful!!!

[dyerrington]

This would be great to have still. I'm only seeing a limited number of work experience records when I pull profiles.