~jaro/balkon

ref: bb814c4b7bb0dd5b4ad259baed3a37ffbb892372 balkon/.golden/loremIpsum20em/golden -rw-r--r-- 87.6 KiB
Add ignored prefixes and suffixes to test data.

This ensures that implementation does not rely on the texts having zero
offset inside their byte arrays.
Use ICU to find line break boundaries.
Implement line breaking on code point boundaries.