markupreader: Add get_attributes() method returning a copy of attributes.
markupreader: Add get_attributes() method returning a copy of attributes.

kamanashisroy/aroop,Distrotech/vala,jessevdk/vala,tjol/vala-tjol,rvu95/vala,jessevdk/vala,GNOME/vala,frida/vala,flobrosch/vala-fixes,frida/vala,severinh/vala,flobrosch/vala-fixes,rvu95/vala,flobrosch/vala-fixes,xdave/pvala,GNOME/vala,tjol/vala-tjol,Distrotech/vala,frida/vala,tjol/vala-tjol,spidermonkdust/vala,spidermonkdust/vala,rvu95/vala,severinh/vala,kamanashisroy/aroop,GNOME/vala,playya/vala,spidermonkdust/vala,severinh/vala,kamanashisroy/aroop,frida/vala,frida/vala,playya/vala,playya/vala,Distrotech/vala,jessevdk/vala,GNOME/vala