0.5.0_pre2: Merge pull request #25 from smoser/fix/travis-releases-2

Updates since 0.4.0:

• BuildRoot 2019.02.1
• Linux Kernel 4.4.0.148.174
• Grub2 2.02~beta2-36ubuntu3.22
• added VirtIO modules: 9pnet, input and graphics

0.3.6

Release 0.3.6

0.4.0: Add stream data and creation of metadata for lxd and -lxc.tar.xz.

This adds a lxd.tar.xz metadata file and also the information in the
stream output so that cirros can be utilized by lxd.  As the needed
files (-lxc.tar.xz and -lxd.tar.xz) are purely new content, the change to
mirror-dump-sstream-data allows us to create them for old releases.

A small re-factor in mirror-dump-sstream-data was required to more
easily create missing -lxd.tar.gz and -lxd.tar.xz and get the
data to create the combined_rootxz_sha256 information.

Once this is published, we'll be able to do:
  lxc remote add --public --protocol=simplestreams cirros \
       https://download.cirros-cloud.net/
  lxc launch cirros:0.4.0

and also:
  lxc launch cirros:0.4.0 "--config=user.user-data=$(cat user-data.txt)"

0.3.5: bin/mirror-dump-sstream-data: update for git

Update this release data script to support git.

0.3.4

update kernel

0.3.3

update kernel

0.3.2

update versions to be 0.3.2

0.3.1

update doc/create-release to 0.3.1

0.3.0

add create-release.txt with info creating downloadable content