fix some things people wanted to be cleaner.
rename --map-file to --style.
no more -t alias for --template.
update docs.
rename template entry in map files to changelog.
if --verbose, use changelog_verbose if there, else changelog.
adding a
adding b
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NONEXISTENT: No such file or directory
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a: No such file or directory
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NONEXISTENT: No such file in rev 9e1684505872
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