Added the ProductRepository class.
Merge branch 'master' of https://github.com/TomRK1089/J2Bugzilla-API
Allow Bugzilla to return a ProductRepository.
Added the SearchBy enumeration.
Added the SearchParam class.
Updated BugRepository to allow searching.
Added the two types of field enums.
Allow retrieval of legal values.
Allow global field search.
Added more meta-operations.
Added connection methods.