Update to Go 1.15 on Travis builds
# It may be tempting to add parens around each individual clause in this expression, but Travis then builds pushes anyway
if: branch = master OR branch =~ ^features/ OR branch =~ ^feature- OR branch =~ ^release/ OR tag =~ ^v\d+.*
language: go
-go: 1.14.x
+go: 1.15.x
sudo: true # give us 7.5GB and >2 bursted cores.
git:
depth: false
