v0.2.6.4 Fix bug in beginTransaction

(FIX) shouldnt set autocommit to 0 in beginTransaction

v0.2.6.3: Merge pull request #5 from myteksi/returnEmptySet

(FIX) avoid logging stack trace of 'Returned empty set' error

v0.2.6.2: Merge pull request #3 from myteksi/updateLockVersion

remove lock version update

v0.2.6.1

(IMPROVE) Implement optimistic locking for updatePartialSql