Changes between v6.3 and v6.4:
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LIU Hao (1):
build: ignore errors from `git describe`
Benno Schulenberg (25):
bump version numbers and add a news item for the 6.4 release
display: remember text and column positions when softwrapping a line
docs: concisely describe how the linter behaves
docs: remove the two notices about the changed defaults
docs: rename README.GIT to README.hacking, so it's clearer what is meant
docs: stop mentioning the obsoleted keywords that were removed
files: designate the root directory with a simple "/", not with "//"
formatter: instead of leaving curses, use full_refresh() to wipe messages
gnulib: update to its current upstream state
help: reshuffle two shortcuts so that more help-line items are paired
options: stop accepting -z, as --suspendable has been dropped too
po: update translations and regenerate POT file and PO files
rcfile: remove five obsolete or deprecated keywords
syntax: default: do not colorize a square or angle bracket after a URL
syntax: perl: add missing keywords, and reduce the length of some lines
syntax: python: mention an alternative linter in a comment
tweaks: add a missing word to a news item
tweaks: add a translator hint
tweaks: improve a comment, and reshuffle two functions plus some lines
tweaks: put each regex on separate line, to better show many keywords
tweaks: rename a variable, to not be the same as a function name
tweaks: rename two variables, to not contain the name of another
tweaks: reshuffle a description and rewrap another
tweaks: reshuffle a few lines, to group things better
version: condense the copyright message, to not dominate the output
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