docs: make 'news' a markdown file (#1208)

* chore: fix markdown headers in NEWS.md

* chore: turn closed pulls/issues into links

* chore: linkify the release headers

* chore: fill in the 3.00 release date

* chore: use 'NEWS.md' in build scripts

* chore: tweak date format to YYYY-MM-DD

CMakeLists.txt

@@ -558,7 +558,7 @@ if(ENABLE_DAEMON OR ENABLE_GTK OR ENABLE_QT)
 endif()
 
 if(INSTALL_DOC)
-    install(FILES AUTHORS COPYING NEWS README.md extras/rpc-spec.txt extras/send-email-when-torrent-done.sh DESTINATION ${CMAKE_INSTALL_DOCDIR})
+    install(FILES AUTHORS COPYING NEWS.md README.md extras/rpc-spec.txt extras/send-email-when-torrent-done.sh DESTINATION ${CMAKE_INSTALL_DOCDIR})
 endif()
 
 if(MSVC AND ENABLE_DAEMON AND ENABLE_QT AND ENABLE_UTILS AND WITH_CRYPTO STREQUAL "openssl")

Makefile.am

@@ -28,7 +28,7 @@ SUBDIRS = \
 
 EXTRA_DIST = \
   qt \
-  NEWS \
+  NEWS.md \
   AUTHORS \
   COPYING \
   README.md \

transmission-gtk.spec.in

@@ -46,7 +46,7 @@ rm -rf $RPM_BUILD_ROOT
 
 %files
 %defattr(-,root,root)
-%doc AUTHORS NEWS README.md
+%doc AUTHORS NEWS.md README.md
 %attr(755,root,root) %{_bindir}/%{name}*
 %{_datadir}/applications/%{name}-gtk.desktop
 %{_datadir}/pixmaps/*