v0.0.1 Release

Implemented

• get(key): Returns a value from the DB
• set(key, value): Sets a value to the database
• delete(key): Deletes a key from the database
• Tail(key): Iterates through all keys >= key
• Head(key): Iterates through all keys <= key
• Sub(start, end): Iterates through all start <= keys <= end
• FirstRow(): Returns First row
• LastRow(): Returns last row