Upgrade to com.jcabi.jcabi 1.19
Upgrade to com.jcabi.jcabi 1.19

We pray that this will fix https://github.com/jcabi/jcabi-github/pull/1131#issuecomment-114334608
cvrebert/typed-github,YamStranger/jcabi-github,cezarykluczynski/jcabi-github,shelan/jcabi-github,pecko/jcabi-github,zygm0nt/jcabi-github,prondzyn/jcabi-github