tree fb3a2913069868e3a5a64a6ae7f2025e0bd28a85
parent 4187857a9af1547ea982f6f00eb4f2649f1d280d
author Davide Pesavento <davidepesa@gmail.com> 1569895544 -0400
committer Davide Pesavento <davidepesa@gmail.com> 1569906002 -0400

ci: upgrade Travis config to Ubuntu 18.04

Also in this commit:

 * Drop clang 3.8 (no easy way to install it on 18.04)
 * Add clang 10 (trunk)
 * Drop Xcode 8.3
 * Upgrade Xcode 10.2 to 10.3
 * Add Xcode 11

Change-Id: I5b18eee860dd5e92ec51ae832998b57aa7681854