PaginatedResult attributes

[mattheworiordan]

Everywhere it seems has_next and is_last is used they are used as methods i.e. has_next(), yet in the spec they are attributes, and even in the code, they appear to be attributes, see

ably-python/ably/http/paginatedresult.py

Lines 21 to 32 in bb72bdc

	@property
	def items(self):
	return self.__items
	def has_first(self):
	return self.__rel_first is not None
	def has_next(self):
	return self.__rel_next is not None
	def is_last(self):
	return not self.has_next()

We should change all examples to access as attributes and update the docs as well if this is possible.

[mattheworiordan]

This is incorrect accoding to the spec, this should be a method and the docs were incorrect, updating