Changelog
- c35d8b2: fix(resource): make admin, tech, and billing contacts optional (@fsoederhuyzen)
- feaed53: docs(resource): update INWX API links in domain schema (@fsoederhuyzen)
- b94c1c6: fix(resource): add checks for optional contact fields (@fsoederhuyzen)
- 7118339: Merge pull request #69 from inwx/fix_do_not_require_all_attributes_in_domain_contacts (@ddmler)
- fb3e151: fix(resource): handle SLAVE zones and invalid record data (@fsoederhuyzen)
- ceb2e9d: Merge pull request #70 from inwx/fix_crash_slave_nameserver (@ddmler)