1.4.1

• Replaces remote file localization method for adding HTTP headers to only add headers on initial request and not redirects.
• Updated dxpy minimum to 0.297.1 to be able to use cryptography version 2.3 (#106)
• Upgraded bleach to 3.1.5 (#138)
• Constrains pytest version <=5.3.5 to avoid breaking changes in pytest (#139)
• Upgrades Cromwell to version 53.1 in test setup and documentation.