zjquery: Fix chaining semantics.
zjquery: Fix chaining semantics.

We now make it so that $('foo').addClass(whatever) and similar
functions properly return the wrapper object for chaining
purposes.  We may eventually want to change the wrapper object
to automatically dispatch to the first child object, but this
should work for now.

hackerkid/zulip,vabs22/zulip,brainwane/zulip,shubhamdhama/zulip,kou/zulip,rht/zulip,vaidap/zulip,jrowan/zulip,brockwhittaker/zulip,vaidap/zulip,eeshangarg/zulip,brockwhittaker/zulip,rht/zulip,mahim97/zulip,Galexrt/zulip,showell/zulip,vabs22/zulip,andersk/zulip,verma-varsha/zulip,synicalsyntax/zulip,eeshangarg/zulip,jackrzhang/zulip,brockwhittaker/zulip,eeshangarg/zulip,brainwane/zulip,jackrzhang/zulip,zulip/zulip,dhcrzf/zulip,rht/zulip,timabbott/zulip,hackerkid/zulip,timabbott/zulip,vabs22/zulip,synicalsyntax/zulip,showell/zulip,rishig/zulip,brainwane/zulip,jackrzhang/zulip,tommyip/zulip,Galexrt/zulip,brainwane/zulip,eeshangarg/zulip,amanharitsh123/zulip,rht/zulip,rishig/zulip,vaidap/zulip,andersk/zulip,shubhamdhama/zulip,Galexrt/zulip,brainwane/zulip,andersk/zulip,jackrzhang/zulip,rishig/zulip,verma-varsha/zulip,brockwhittaker/zulip,punchagan/zulip,timabbott/zulip,shubhamdhama/zulip,vabs22/zulip,mahim97/zulip,vabs22/zulip,jrowan/zulip,andersk/zulip,synicalsyntax/zulip,Galexrt/zulip,shubhamdhama/zulip,kou/zulip,Galexrt/zulip,dhcrzf/zulip,jrowan/zulip,zulip/zulip,brockwhittaker/zulip,amanharitsh123/zulip,dhcrzf/zulip,timabbott/zulip,dhcrzf/zulip,rishig/zulip,amanharitsh123/zulip,shubhamdhama/zulip,rht/zulip,Galexrt/zulip,punchagan/zulip,rishig/zulip,zulip/zulip,jrowan/zulip,showell/zulip,hackerkid/zulip,zulip/zulip,timabbott/zulip,tommyip/zulip,verma-varsha/zulip,showell/zulip,kou/zulip,synicalsyntax/zulip,mahim97/zulip,rht/zulip,jackrzhang/zulip,eeshangarg/zulip,synicalsyntax/zulip,punchagan/zulip,tommyip/zulip,kou/zulip,showell/zulip,amanharitsh123/zulip,jrowan/zulip,rishig/zulip,synicalsyntax/zulip,timabbott/zulip,jackrzhang/zulip,mahim97/zulip,shubhamdhama/zulip,punchagan/zulip,vaidap/zulip,jrowan/zulip,amanharitsh123/zulip,brainwane/zulip,showell/zulip,zulip/zulip,vaidap/zulip,mahim97/zulip,eeshangarg/zulip,mahim97/zulip,tommyip/zulip,showell/zulip,verma-varsha/zulip,verma-varsha/zulip,verma-varsha/zulip,punchagan/zulip,brockwhittaker/zulip,timabbott/zulip,hackerkid/zulip,hackerkid/zulip,hackerkid/zulip,zulip/zulip,eeshangarg/zulip,kou/zulip,brainwane/zulip,andersk/zulip,hackerkid/zulip,punchagan/zulip,kou/zulip,synicalsyntax/zulip,tommyip/zulip,Galexrt/zulip,kou/zulip,rishig/zulip,tommyip/zulip,dhcrzf/zulip,jackrzhang/zulip,dhcrzf/zulip,punchagan/zulip,dhcrzf/zulip,vabs22/zulip,andersk/zulip,tommyip/zulip,rht/zulip,shubhamdhama/zulip,amanharitsh123/zulip,vaidap/zulip,zulip/zulip,andersk/zulip