cargo: update dependencies: chrono(0.2:0.3) clap(2.10:2.20)
cargo: update dependencies: chrono(0.2:0.3) clap(2.10:2.20)

And sort dependency list

Signed-off-by: Silvio Fricke <f2b81419e41c7651e2106cca3df3958aa3b28c36@gmail.com>

silvio/gerrit-rust,silvio/gerrit-rust