Update subexpressions.jl

[huckl3b3rry87]

added https://github.com/JuliaOpt/JuMP.jl/pull/1979/commits/bc81e3ca390e2b344dc4018da68f93f11ab04a00#diff-64ae85e312a7250fa4dcdddf57e97af6

[codecov-io]

Codecov Report

Merging #57 into master will increase coverage by 0.02%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #57      +/-   ##
==========================================
+ Coverage   94.49%   94.51%   +0.02%     
==========================================
  Files          10       10              
  Lines         926      930       +4     
==========================================
+ Hits          875      879       +4     
  Misses         51       51

Impacted Files	Coverage Δ
src/subexpressions.jl	100% <100%> (ø)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update ad0217b...f26a669. Read the comment docs.

[codecov-io]

Codecov Report

Merging #57 into master will increase coverage by 0.02%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #57      +/-   ##
==========================================
+ Coverage   94.49%   94.51%   +0.02%     
==========================================
  Files          10       10              
  Lines         926      930       +4     
==========================================
+ Hits          875      879       +4     
  Misses         51       51

Impacted Files	Coverage Δ
src/subexpressions.jl	100% <100%> (ø)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update ad0217b...ccbab86. Read the comment docs.

[mlubin]

Could you also copy over the test?

[huckl3b3rry87]

done