v2.5.0

PRs:

• #188 -- Tap()/TapIf() - Major overhaul including examples
• #192 -- TapIf overloads for handling result-returning funcs

Fixed issues:

• #174 -- Risky Tap signatures
• #179 -- Add Task<Result<T, E>> Tap<T, E, >(this Task<Result<T, E>> resultTask, Func<T, Task<>> func) override to TapAsyncBoth