improve evalsimple handler:

[aviatesk]

• use JunoProgressLogger
• use include_string

[codecov]

Codecov Report

Merging #333 into master will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #333      +/-   ##
==========================================
+ Coverage   57.47%   57.48%   +0.01%     
==========================================
  Files          43       43              
  Lines        2530     2531       +1     
==========================================
+ Hits         1454     1455       +1     
  Misses       1076     1076              

Flag	Coverage Δ
#unittests	57.48% <100.00%> (+0.01%)	⬆️

Impacted Files	Coverage Δ
src/misc.jl	22.22% <100.00%> (+4.57%)	⬆️
src/precompile.jl	98.59% <100.00%> (-0.01%)	⬇️

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