fixes bug when using stop-on-error+multiple variants bug fixes phpben…

…ch#563 (phpbench#564)

* fixes bug when using stop-on-error+multiple variants bug fixes phpbench#563

fixes issue where stop-on-error is used with a subject contianing
multiple variants resulting in a computation error

* updates travis

* bumped seld jsonlint dep

Bumped version

Bumped version

Tagging 0.12.2

Updated CL

Fixed compare field ommision

Use stable deps and do not include phar-updater

Release of new version 0.11.0

Bumped version