1.51 2021-01-31 Bug fix release, update recommended

• Addressed bug/issue #10 of failing observers test, ref PR #61. Documentation also updated accordingly via PR #66

• PR #86 reverts fix to issue #10 introduced in release 1.49

• PR #85 addressing bug with use of database fields in persister

• Adressed bug/issue #72 (reopened) and #73 via PR #74

• Improved test coverage, addressing issue #36 (not closed), ref PRs:

  • #80
  • #81
  • #91

• Cleaned POD formatting, PR #83

• Removed SVN/CVS legacy tags and adjusted shebang lines, PR #82

• Change log converted from plain text to Markdown, PR #76

• Added missing contributor Mohammad S Anwar to ACKNOWLEDGEMENT section, contribtution was included in release 1.49

• #70, corrections to documentation on persisters

• #71 added a missing point to the change log for release 1.50

• PR #65, converting two older text files to Markdown. Documentation rewrite is being considered and improvements and additions will be made in this area in the future

• PR #67 converting tabs to spaces