cache MIME_Entity_body_as_stringref result
add do_confirm_html feature
allow sourcepaths to be given in config file

Allows for

  ml2json --config foo.pl --open-message-id bar@baz.z
make --deidentify work with a --config that has actions
add warning about config file unsafety
more relaxed entity matching
message identification in a NOTE outside of a Try scope
small fix
debug
handle --mbox-glob "*" correctly

sigh. Was triggered with nested directories, only.
fix handling of non-existent paths in unless_seen_path
Revert "debug"

This reverts commit 6f997c20adf3c99865640d9d66d78ef1f8c43c99.

Conflicts:
	lib/Chj/Ml2json/MailcollectionParser.pm