[Not Urgent, Stylistic] Format Julia source files by JuliaFormatter
Format Julia source files by JuliaFormatter. Everyone can format sources by executing the following in the project root directory:
using JuliaFormatter
format(".")
Formatting styles are set in .JuliaFormatter.toml. If there are problems or preferences, tell me.
This solves https://github.com/JuliaData/YAML.jl/issues/154.
This PR will conflict with https://github.com/JuliaData/YAML.jl/pull/153, https://github.com/JuliaData/YAML.jl/pull/155 and https://github.com/JuliaData/YAML.jl/pull/156, therefore if you merge this, you should merge #153, #155 and #156 first, then I reformat sources and I resolve the confliction. Finally, merge this (#157).
Does it make sense to (also?) make a precommit hook (I think that's what it's called) so this stays consistent?