Explicitly Enable Strong Mode Analysis

[bencampbell-wf]

Enabling Strong Mode analysis ensures that the package is compatible with the Dart Dev Compiler. By maintaining a the analysis_options.yaml file it is possible for tooling to audit strong mode compliance throughout the dependency graph of a dart application.

The implementation is currently strong mode complaint and requires no code changes:

dartanalyzer --verbose --fatal-infos --fatal-warnings lib/ansicolor.dart test/ansicolor_test.dart
Analyzing lib/ansicolor.dart, test/ansicolor_test.dart...
Loaded analysis options from /tmp/ansicolor-dart/analysis_options.yaml
No issues found!

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[jtmcdole]

Did you mean to close this?

[bencampbell-wf]

@jtmcdole I did. The change was introduced with respect to a strong mode audit. I determined it was unnecessary.