Merge pull request #6 from brunotm/prepared-statement

Prepared statements support

Merge pull request #5 from brunotm/tx-rows-close

database: ensure rows are closed and error is  returned

Merge pull request #4 from brunotm/perf-reduce-allocs

Improve performance and support parametric columns in select

Merge pull request #3 from brunotm/migrate-versions

Migrate: add known version listing

Merge pull request #2 from brunotm/migrate-documentation

Migrate documentation

Merge pull request #1 from brunotm/no-transaction

migrate: Add the ability to disable transactions for single statement migrations