UPD: min Julia to v1.6

[codecov[bot]]

Codecov Report

Merging #27 (f809f72) into master (17db23c) will decrease coverage by 0.69%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #27      +/-   ##
==========================================
- Coverage   36.97%   36.27%   -0.70%     
==========================================
  Files          11       10       -1     
  Lines         733      725       -8     
==========================================
- Hits          271      263       -8     
  Misses        462      462              

Impacted Files	Coverage Δ
src/PowerModelsAnalytics.jl	100.00% <0.00%> (ø)
src/core/export.jl

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[pseudocubic]

Errored job is due to egress rate limiting, ignoring