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Update Changelog with more Transaction changes.

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John Gallagher 2016-05-18 16:40:38 -05:00
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@ -5,6 +5,11 @@
connection are inherently nested. While a transaction is alive, the parent connection or connection are inherently nested. While a transaction is alive, the parent connection or
transaction is unusable, so `Transaction` now implements `Deref<Target=Connection>`, giving transaction is unusable, so `Transaction` now implements `Deref<Target=Connection>`, giving
access to `Connection`'s methods via the `Transaction` itself. access to `Connection`'s methods via the `Transaction` itself.
* BREAKING CHANGE: `Transaction::set_commit` and `Transaction::set_rollback` have been replaced
by `Transaction::set_drop_behavior`.
* BREAKING CHANGE: `Transaction::savepoint()` now returns a `Savepoint` instead of another
`Transaction`. Unlike `Transaction`, `Savepoint`s can be rolled back while keeping the current
savepoint active.
* Adds `insert` convenience method to `Statement` which returns the row ID of an inserted row. * Adds `insert` convenience method to `Statement` which returns the row ID of an inserted row.
* Adds `exists` convenience method returning whether a query finds one or more rows. * Adds `exists` convenience method returning whether a query finds one or more rows.
* Adds support for serializing types from the `serde_json` crate. Requires the `serde_json` feature. * Adds support for serializing types from the `serde_json` crate. Requires the `serde_json` feature.