Implement Default for Configuration

[VictorKoenders]

Closes #567

[codecov]

Codecov Report

Merging #575 (66a29f4) into trunk (9dd19d9) will increase coverage by 0.41%.
The diff coverage is 33.33%.

❗ Current head 66a29f4 differs from pull request most recent head 3f43442. Consider uploading reports for the commit 3f43442 to get more accurate results

@@            Coverage Diff             @@
##            trunk     #575      +/-   ##
==========================================
+ Coverage   55.58%   56.00%   +0.41%     
==========================================
  Files          50       50              
  Lines        4305     4275      -30     
==========================================
+ Hits         2393     2394       +1     
+ Misses       1912     1881      -31     

Impacted Files	Coverage Δ
src/config.rs	82.60% <33.33%> (-7.87%)	⬇️
src/error.rs	0.00% <0.00%> (ø)
src/features/impl_std.rs	66.34% <0.00%> (ø)
tests/issues/issue_500.rs	100.00% <0.00%> (ø)
src/lib.rs	16.17% <0.00%> (+0.98%)	⬆️
tests/basic_types.rs	99.32% <0.00%> (+1.32%)	⬆️
tests/derive.rs	97.76% <0.00%> (+2.08%)	⬆️
tests/std.rs	100.00% <0.00%> (+2.46%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.