corrected removal of travis key
Avoiding unnecessary warning message during cache copy

`cp` emitted "are the same file" messages due to our hardcoding
of the STACK env var to "". this is a band-aid, which should be
completely addressed when we establish our own STACK convention
in cf.
Bump version to 1.1.2
Add "set -euo pipefail" to bash scripts

This causes more errors to be thrown, and forces us to write safe scripts

[#79735118]
Conflicts:
	buildpack-packager
Ignore buildpack build artifacts