chg: dev: add program version.

[rachmadaniHaryono]

No description provided.

[codecov-io]

Codecov Report

Merging #42 into master will decrease coverage by 1.14%.
The diff coverage is 60%.

@@            Coverage Diff            @@
##           master     #42      +/-   ##
=========================================
- Coverage   96.05%   94.9%   -1.15%     
=========================================
  Files           1       1              
  Lines         152     157       +5     
=========================================
+ Hits          146     149       +3     
- Misses          6       8       +2

Impacted Files	Coverage Δ
export_saved.py	94.9% <60%> (-1.15%)	⬇️

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[rachmadaniHaryono]

hi @csu, i add minor feature which require fast response so i merged it without consulting you first.

this is related to #39 and my discussion with @admish