`title` fields should not contain line breaks

[GeeLaw]

(Tangentially related,) ePrint seems to render \\ as \, but the TeX meaning of \\ is a line break. In crypto.bib,

EPRINT:SESKJK22
EPRINT:FKPR21
EPRINT:Chen20b
EPRINT:Vysotskaya19
EPRINT:ChaYun12
EPRINT:ChaSar06d
EPRINT:CHKLM06

have \ (rendered by ePrint) or line breaks encoded as \\, which causes a (justified, likely unfortunate) line break when rendered.

The line break likely is for typesetting the title in the paper, specific to the font size and the text width, or due to being subtitle or supplementary information ("semantic line break"). I verified that this is the case for all the 7 instances. In bibliography, the line breaks should just be removed.

In the future, imports from ePrint should have (regular expression) \s*(\\\\\s*)+ (arbitrarily many consecutive line breaks, optionally surrounded by space characters) replaced by (one space character).