v0.3.0

⚠️ Breaking changes:

• Removed separate PeekView trait (no need to import this separately anymore)
• Renamed struct CreatePeekMoreIterator to PeekMore

🍏 Added:

• Opt-in support for SmallVec (requires nightly compiler)

🍎 Changed:

• Only update the underlying queue of peekable values on peek()

🛠️ Fixed:

• Various documentation fixes