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"mathjax" versions published in Ubuntu

Eoan (2.7.4+dfsg-1): universe/web
Disco (2.7.4+dfsg-1): universe/web
Bionic (2.7.3+dfsg-1): universe/web
Xenial (2.6.1-1): universe/web
Trusty (2.3-1): universe/web
Precise (1.1-1): universe/web