Emcache

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- Support for SSL [62](https://github.com/emcache/emcache/pull/62)

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- Support for autobatching [57](https://github.com/emcache/emcache/pull/57)

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- Add create connection latencies metrics [54](https://github.com/emcache/emcache/pull/54)
- Add new `min_connections` parameter [55](https://github.com/emcache/emcache/pull/55)
- Purge only one connection per loop iteration [56](https://github.com/emcache/emcache/pull/56)

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- Stable version

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- Support for Python 3.9 [52](https://github.com/emcache/emcache/pull/52)

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- Fix bug: release connection when waiter is cancelled after wakeup [48](https://github.com/emcache/emcache/issues/48)