v2.2.0

Non-native session handler with locks is back!

I was sad that the native handler doesn't care about locks (which I didn't notice till recently), so I had to revert the old session handler written in PHP. The native is still default, but this pull adds new option to turn it back on

redis:
    session:
        native: off

There should be no problem in session data compatibility. It should just work.

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Also, thanks to @matej21, the journal has new internal structure, which should be exponentially faster on absurd numbers (hundreds of thousands or even milions) of tagged keys.

• Don't forget to flush your cache!