tree e25a3055223af9796063fadd4a2de8869be8dcb2
parent 23818e30ec0a83099236e269b17b6087f6c44a9c
author Bill Hollings <bill.hollings@brenwill.com> 1585937718 -0400
committer Bill Hollings <bill.hollings@brenwill.com> 1585937718 -0400

Update Travis script.

Avoid caching External directory and force dependencies build every time.
Travis use Xcode 11.4.