capitalize all nouns and verbs in 'title'

[yegor256]

Would be nice to replace this:

@article{pierce94,
  author = {Benjamin C. Pierce and David N. Turner},
  title = {Simple type-theoretic foundations for object-oriented programming},
}

with this:

@article{pierce94,
  author = {Benjamin C. Pierce and David N. Turner},
  title = {Simple Type-Theoretic Foundations for Object-Oriented Programming},
}

At least let's complain, if we can't fix.