Added temp file for logger output
Fixed the issue with dbxref testing
Fixed the issue with obsolete term testing
Synonym updates now follows the same logic as that of comments updating
Remove sql statements and table to create a list of updatable synonyms.
Added unit tests for updating metadata of cvterms
Added sql statements for creating alt_ids
Added support for loading alt_ids in SQLite backend
Added unit tests to check loading of alt_ids
Bumped version of Test::Chado