Merge branch 'release/0.2.7' into develop
Change dependencies' protocol from git to https

Servers behind firewall will only support http/https but not git protocol
in some companies due to security policy
Merge pull request #1 from bluesalt/develop

Change dependencies' protocol from git to https
Upgrade libcutil to 0.4.2
Bump leo_mcerl to 0.2.8
Merge branch 'release/0.2.8'