OPERA R6 DIST-S1 PGE Release Candidate 3.0

Official release candidate v3.0 of the R6 DIST-S1 PGE. This version incorporates the v2.0.7 "CalVal" release of the DIST-S1 SAS.

What's Changed

• Update Traceback Regex by @RKuttruff in #732
• DIST-S1 PGE CalVal 4.3 SAS v2.0.7 Integration by @RKuttruff in #747
• DIST-S1 PGE Release 6.0.0-rc.3.0 by @RKuttruff in #749

Full Changelog: 6.0.0-rc.2.0...6.0.0-rc.3.0