Revert "update readme to reflect reconnection handling"

This reverts commit 590c6b94a0d1cd7c85a23e5b666b99c20ff1162a.
Revert "version bump"

This reverts commit bc62f96fb2e936ebc032bc2652d7b51639cdaede.
Revert "remove mysql-native and replace with mysql2"

This reverts commit 4abb1548672469324948bb76cdddbbfecf014567.
add retry logic and connection testing for pooling