Updated Changelog for 1.1.1 release (#374)

Add an option to get the 'expand' version for jsonLD (#369)

* Add an option to get the 'expand' version

* adding test for expand option

* whitespace fixes

* make the option work as either-or

* whitespace fix

Bumped version number up to 1.0.0

Changed version number to 1.0.0-rc.1

Merge pull request #256 from ragol/serialiser-typehint

Use type hints in Seraliser classes

0.9.1 release

0.9.0 is released

merge for 0.9.0-rc.3