Comment 57 for bug 1717040

I could test `apt-get install zstd/xenial-proposed` today.

And it works as intended : library is there and usable, cli works fine too.

Just as a little detail, here is the message I'm receiving during installation :

```
The following additional packages will be installed:
  libzstd1
The following packages will be REMOVED:
  libzstd-dev
The following NEW packages will be installed:
  zstd
The following packages will be DOWNGRADED:
  libzstd1
0 upgraded, 1 newly installed, 1 downgraded, 1 to remove and 157 not upgraded.
Need to get 391 kB of archives.
After this operation, 258 kB of additional disk space will be used.

```

I was surprised by the DOWNGRADED statement
because libzstd1 wasn't installed on this VM, so there should be nothing to downgrade.

Anyway, this is mostly a cosmetic issue,
final statement is : it works all fine.