Document libcurl as a dependency

Closes: #146

Prepare for 0.19.0 release.

tag 0.18.1 release

Prepare mellon release 0.18.0 (#72)

Resolves: #71

Fix UTF-8 encoding

Merge pull request #10 from jhrozek/v0_16_0

Update to 0.16.0

Merge pull request #6 from jhrozek/v0_14_3

Let's release 0.15.0

Version 0.14.2

Version 0.14.1

Version 0.14.0