v0.2.0

• Allow both non-owned and owned contiguous containers as part of underlying data structure
• Simplify and removed const N: usize parameter from traits Find<T>, Connected<T>, Union<T>
• Simplify traits bounds on UnionFind structure
• Show examples of other types of containers used in tests (with heapless::Vec<T,N>)
• Allow T type parameter in UnionFind to take in non-integral types