1.2.0 Release Preparations (#158)

* extension version and changelog (draft)

Signed-off-by: Jens Reinecke <jens.reinecke@arm.com>

* changelog review

Signed-off-by: Jens Reinecke <jens.reinecke@arm.com>

---------

Signed-off-by: Jens Reinecke <jens.reinecke@arm.com>

Merge pull request #116 from jreineckearm/release-1-1-0

Version 1.1.0 and CHANGELOG update

Merge pull request #44 from eclipse-cdt-cloud/fix-publisher

Well this is embarrassing... Fix publisher

Merge pull request #43 from eclipse-cdt-cloud/initial-release

Prepare for Initial release