NEWS.md: update

NEWS.md

@@ -1,3 +1,20 @@
+## HEAD
+
+* New tool mflow to reformat format=flowed plain text mails.
+* New tool mbnc to bounce mails (send original mail to someone else).
+* mshow filters can output raw text now, e.g. for HTML rendering with colors.
+* mhdr can extract MIME parameters.
+* New contrib: mrecode
+* New contrib: mraw
+* mshow regards non-MIME mails as MIME mails with one part now.
+* mcom runs mmime when deemed necessary.
+* mshow -F to disable MIME filters.
+* mpick supports negations now.
+* msed can remove headers depending on their value.
+* Improved UTF-8 parsing.
+* Improved documentation.
+* Numerous bug fixes and portability fixes.
+
 ## 0.2 (2017-07-17)
 
 * New sequence syntax `m:+n` for `n` messages after message `m`.