publications: added the Physica Scripta preprint
chapters/wigner-spec: fixed punctuation
striptex: ignoring \qedhere when looking for the punctuation in a display equation
striptex: removing newlines surrounding display equations
striptex: fixed the display equation finding regexp
chapters/bec-squeezing/theory: added some text between two display equations
chapters/func-calculus: stylistic fixes
chapters/fpe-sde: stylistic fixes
Fixed indefinite articles in front of \abbrev{fpe}