Proxystore

What's Changed
* ProxyStore Rewrite by gpauloski in https://github.com/proxystore/proxystore/pull/9
* Proxies created by Store.proxy() can auto-evict the data from the store after the proxy has resolved itself using the evict=True flag (0ef8f617118926737c85936adf2c0355150d93ee).
* Added cloudpickle to ProxyStore serialization utilities for lambda pickling support (a992ec756b40551fa36455e39d4bc617cb7cc2ce).
* Added LambdaFactory (fc76746a432cfe6f50214bece98ebe956abd848b).
* Extensive ProxyStore refactor to separate proxy/factory building blocks from the key-value store implementations. See Issue 8 and Pull Request 9 for more details (0564e5f437cc34097528dd93256460a4bf1e6345).
* Pass custom factories to Store.proxy() (dffba4c7b0a81ea12f91d75c1ab014ded435868b).
* Initialize multiple factories of the same type (1411c0f638e22cdb4ea0047fa97137c84eab8538 and 41b4bd3c4e432ac00c3b9c3c91fb911fb1450353).

**Full Changelog**: https://github.com/proxystore/proxystore/compare/v0.1.1...v0.2.0

Bug fixes and documentation improvements.

- Added ProxyStore integration into example FuncX and Parsl applications (eaa1782).
- Added support for preserialized objects (c2c2283).
- Changed Proxy to inherit from the pure Python slots Proxy from lazy-object-proxy rather than the C version. Closes 1 (5c77eb0).
- Extensive docstring and documentation updates.
- Minor unittest updates.

**Full Changelog**: https://github.com/proxystore/proxystore/compare/v0.1.0...v0.1.1

First release of ProxyStore.

**Full Changelog**: https://github.com/proxystore/proxystore/commits/v0.1.0