Three small courtesies for writers, all shipped today

Posts no longer carry blank lines at the end -- if your post trails off with empty paragraphs or stray Returns, the server trims them when it saves, so nothing renders as mysterious empty space below your last line (a new config setting, flRemoveBlanksAtEnd, is on by default; set it false to keep trailing blanks). The autolinker learned that install.md is a document's name, not a web address -- bare names ending in a file extension that happens to be a real internet domain ending (.md, .zip, .sh, .py) stay plain text, while real addresses, including bare domains like rss.chat, still become links. And the server's subscription list can now carry a title of your choosing: set titleForSublist in config.json; leave it out and the title is unchanged.