URL History Object initial commit
Merge remote-tracking branch 'upstream/version_2.1' into issue_45
Updated existing usage of Domain object to account for name change to Domain Name object
Updated annotation on Hostname field for clarity
Updated annotation for Typed_Count field in URLHistoryEntryType to state that it is only applicable for Chrome
Renamed Typed_Count field to Manually_Entered_Count for clarity
Updated Hostname field to use Hostname Object rather than Domain Name Object
Merge pull request #241 from ikiril01/issue_45

Added URL History Object