1.8.6

Features:

• 7ff3279 feature: Add ValidationRule extensions method overloads to accept any object implementing IValidationState (#148) @thargy

Fixes:

• a9c7104 Fixes ReactiveValidationObject NullReferenceException and enhances performance and thread-safety of ValidationText (#144) @thargy

Housekeeping:

• e7bc86d housekeeping: Add Analyzers to the Sample App (#143) @worldbeater
• 2548cc0 housekeeping: Add Images Showing the Capabilities (#149) @worldbeater
• 145bb70 housekeeping: Correct the Error Message in ValidationText (#150) @worldbeater