Fill array values before setting them as value

[knutwalker]

When using setter methods for array options, the values aren't set when the setter is invoked, making it impossible to do any kind of processing on the values other than storing the array, as every value is null.

[codecov-io]

Codecov Report

Merging #523 into master will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master     #523   +/-   ##
=========================================
  Coverage     89.01%   89.01%           
  Complexity      284      284           
=========================================
  Files             4        4           
  Lines          3906     3906           
  Branches        959      959           
=========================================
  Hits           3477     3477           
  Misses          214      214           
  Partials        215      215

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/picocli/CommandLine.java	89.03% <100%> (ø)	159 <0> (ø)	⬇️

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[remkop]

Thanks for the PR!
This, as well as the other PRs, look like good changes.
I tried to do “Rebase and merge” from the GitHub web UI, but there seems to be a conflict.
Would you mind rebasing them?

[knutwalker]

Sure, I've rebased the PRs

[knutwalker]

Sure, I've rebased the PRs

[knutwalker]

Sure, I've rebased the PRs