0.7.0 release (transact-rs#2575)

* WIP preparing 0.7.0 release

* fix: re-enable examples

* fix doctests in `sqlx-core`

* cherry-pick CHANGELOG entry for 0.6.3

* add actions workflow for examples

* fix(cli): close connection after running migrations

* fix examples

* fix(sqlite): fix parsing of URLs via `Any`

* fix(example): don't let Postgres `listen` example run forever

* fix Postgres `transaction` example

0.7.0-alpha.3 release

0.6.3 release (hotfix)

0.6.2 release

0.6.1 release

0.6.0 release

0.5.13 release

0.5.12 release

prepare 0.5.11 release (transact-rs#1715)

Prepare 0.5.10 release (transact-rs#1603)

* fix(cli): change new `rustls` and `native-tls` features to use correct runtime feature

* chore: upgrade SQLx crates to 0.5.10, upgrade all dependencies to latest versions

chore(cli): upgraded `clap` to `3.0.0-rc.9`

* fix(tests/sqlite): ignore `issue_1467()` as spuriously failing

I'm well aware of the principle that a spuriously failing test is a failing test, but even though I have it outputting the seed used with a reproducible PRNG, I can't reproduce the failures locally, so 🤷.

* chore: add CHANGELOG entry for 0.5.10