Add double quotations for labels for savedot

[Paalon]

Solve #61.

[gdalle]

Thanks! Could you add a test while you're at it, to make sure that this doesn't happen again if the codebase changes?

[Paalon]

Test fails at code formatting, what should I do?

[gdalle]

Test fails at code formatting, what should I do?

In the project environment, run

using JuliaFormatter, MetaGraphsNext
format(MetaGraphsNext)

JuliaFormatter is a good package to have in your base environment

[codecov]

Codecov Report

Merging #62 (2e0fb4d) into master (063399b) will increase coverage by 0.13%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #62      +/-   ##
==========================================
+ Coverage   93.24%   93.37%   +0.13%     
==========================================
  Files           7        7              
  Lines         296      302       +6     
==========================================
+ Hits          276      282       +6     
  Misses         20       20              

Impacted Files	Coverage Δ
src/MetaGraphsNext.jl	100.00% <ø> (ø)
src/persistence.jl	100.00% <100.00%> (ø)

[gdalle]

Documentation is failing, I'm on it

[gdalle]

This is a breaking change so I'm bumping the version number, it will feature in the next minor release but that may not be right now