version bump to 2019.1b1

ernesto release. Thanks to everyone.

rc1 version bump

Merge pull request kytos#540 from hdiogenes/master

Version bump to 2018.2b3 + changelog

updated changelog

Merge pull request kytos#528 from macartur/update_version

Update version

Merge pull request kytos#527 from macartur/update_version

Update version to 2018.1

Merge pull request kytos#526 from macartur/update_version

Update version to 2018.1rc1

Merge pull request kytos#525 from macartur/update_package_to_release_…

…2018_1_b3

Update package to release 2018 1 b3

Merge pull request kytos#522 from macartur/update_version

Update version from 2018.1b1 to 2018.1b2