Log Message:
p5-RT-Client-REST: update to 0.60.

0.60 Wed May 6 2020 "Dean Hamstead" <dean@fragfest.com.au>
  - PR#25 GH#23 Fix get_attachments_metadata
  - PR#24 GH#22 Fix get_attachments_metadata

0.59 Mon May 4 2020 "Dean Hamstead" <dean@fragfest.com.au>
  - Worked around what appears to be a bug in PodChecker in perl 5.20
  - Adjusted travis and dist.ini
  - No functional changes

0.58 Thu Apr 30 2020 "Dean Hamstead" <dean@fragfest.com.au>
  - RT118729 correct bug when "not set" is in textA
  - PR#19 Report UA, URI, and better errors when you opt in. Thanks @melmothx

0.57 Tue Apr 28 2020 "Dean Hamstead" <dean@fragfest.com.au>
  - PR#21 Add SLA and SLADisabled attributes which appeared in RT 4.4.3