Version 2.5.2

What's Changed

• Change .exists? to .exist? by @MSP-Greg in #228
• gem_helper.rb - comments, fixup Gem::Version vs Gem::Requirement. Fixes #233 by @thomthom in #234
• Add Yard configuration and correct Yard syntax. by @thomthom in #230
• Propagate the random seed in the runner. by @thomthom in #235
• .rubocop.yml - set TargetSketchUpVersion: 2017 by @thomthom in #236
• Bump version to 2.5.2. by @thomthom in #237

Full Changelog: 2.5.1...2.5.2