added test case to check if pg settings related to custom defined type parsers are being maintained.
issue #1
a bit of cleanup. #1
updated test to restore original type parser. Also renamed it as it doesn't resolve an issue
updated test to restore original type parser.
Also renamed it as it is not a fix for issue #1.
Merge branch '1-pg-transaction-does-not-maintain-pg-settings' of github.com:goodybag/node-pg-transaction into 1-pg-transaction-does-not-maintain-pg-settings
make sure the type parser gets restored in the event of an error
Merge pull request #2 from goodybag/2-add-test-to-confirm-user-defined-type-parsers-work-correctly

add test to confirm user defined type parsers work correctly