v0.2.0

Rework to provide a number of improvement

• Add bytes-based radix tree
• Iteration done in lexical order
• Zero allocation for all read operations, including walk
• Remove mostly useless ability to skip during iteration
• Get returns boolean to indicate the presence of value (can differentiate between no value and nil value)
• No more stringer for walk function, provides a string.
• Speed improvements
• Remove Runes tree since Bytes makes it unneeded

NOTE: This release contains breaking changes