Bump to v3.2.1

Bump Cargo.lock

Oops. I forgot about the library first

Prepare 3.1.0

I'm happy to announce `rdedup` v3.0.0!

* generational GC
* change in repo format
* internal improvements

The biggest improvement is the generational GC system, allowing for incremental
garbage collection. This should increase the viability of `rdedup` for very big
data sets.

The repo format was changed, making it incompatible with the previous releases.

Unfortunately, while this project is really useful, solid, and attracted quite a bit
of attention, it's development mostly slowed down. The main author is content
with the current features,  reliability and he's busy
with other things. There were some people and businesses interested in picking
it up and improving for applications they were interested in, but nothing
materialized.

In a sense, v3 release is about releasing whatever is ready and letting
the project be stable and useful to people that find it.

The v3 repository format is incompatible with v2, mostly because the author
had no time and energy to implement it.

If you are interested in working on or using `rdedup`, don't worry - the
project is still in great shape, and devs and users are still around. Join
[rdedup gitter channel](https://gitter.im/dpc/rdedup) and let's chat!

version 3.0.0-0.1

version 2.0.0

Released v2.0.0-0.2

Round of `cargo fmt`

Merge pull request #60 from phillipCouto/release_1.0.2

Release v1.0.2