Pajek reader + foodweb data

[tpoisot]

Add the Pajek data to distribute quantitative food webs

[tpoisot]

Closes #137 when merged

[codecov]

Codecov Report

Merging #140 into develop will increase coverage by 0.79%.
The diff coverage is 96.87%.

@@             Coverage Diff             @@
##           develop     #140      +/-   ##
===========================================
+ Coverage    80.98%   81.77%   +0.79%     
===========================================
  Files           40       40              
  Lines         1099     1136      +37     
===========================================
+ Hits           890      929      +39     
+ Misses         209      207       -2

Impacted Files	Coverage Δ
src/EcologicalNetworks.jl	50% <ø> (ø)	⬆️
src/misc/data.jl	98.38% <96.87%> (-1.62%)	⬇️
src/rand/null.jl	100% <0%> (ø)	⬆️
src/rand/shuffle.jl	29.13% <0%> (+1.32%)	⬆️
src/modularity/labelpropagation.jl	100% <0%> (+2.5%)	⬆️

---

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Powered by Codecov. Last update 7715d5e...4156b24. Read the comment docs.

[codecov]

Codecov Report

Merging #140 into develop will increase coverage by 0.79%.
The diff coverage is 96.87%.

@@             Coverage Diff             @@
##           develop     #140      +/-   ##
===========================================
+ Coverage    80.98%   81.77%   +0.79%     
===========================================
  Files           40       40              
  Lines         1099     1136      +37     
===========================================
+ Hits           890      929      +39     
+ Misses         209      207       -2

Impacted Files	Coverage Δ
src/EcologicalNetworks.jl	50% <ø> (ø)	⬆️
src/misc/data.jl	98.38% <96.87%> (-1.62%)	⬇️
src/rand/null.jl	100% <0%> (ø)	⬆️
src/rand/shuffle.jl	29.13% <0%> (+1.32%)	⬆️
src/modularity/labelpropagation.jl	100% <0%> (+2.5%)	⬆️

---

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 7715d5e...4156b24. Read the comment docs.

[coveralls]

Coverage increased (+0.5%) to 81.521% when pulling 4156b24 on feature-pajek into 7715d5e on develop.