extend jira meta functions

[gonchik]

Closing that request
#1276

[codecov-commenter]

Codecov Report

Attention: 12 lines in your changes are missing coverage. Please review.

Comparison is base (3a97c6d) 34.49% compared to head (b878692) 34.45%.

Files	Patch %	Lines
atlassian/jira.py	14.28%	12 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1308      +/-   ##
==========================================
- Coverage   34.49%   34.45%   -0.05%     
==========================================
  Files          45       45              
  Lines        8257     8267      +10     
  Branches     1146     1150       +4     
==========================================
  Hits         2848     2848              
- Misses       5295     5305      +10     
  Partials      114      114              

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