1.5.6 - Even more Docs to fill your holiday Socks!

• 1.5.6 - Jun 27 2016
• Improve logging when starting a program, including prefixing each with
  ($programName), noting when a match is made, etc
• Improve documentation a lot
• Improve some log strings
• 1.5.5 - Jun 23 2016
• When we fail to match a child with proctitle_re, include "within success_seconds=X seconds" within the error message.
  The intent is to direct folks to looking into if maybe they need to increase that value from the default, for example if it takes 5 seconds to start their application,
  or if the application changes its proctitle after so many seconds.
• Documentation - Improve spacing, word use, etc to make things more clear
• Documentation - Add a paragraph about how usrsvc starts a process
• Documentation - Add a paragraph about how usrsvc/usrsvcd works with "scan_for_process", and some notes on proctitles
• Documentation - Have "usrsvc --readme" use README.md (markdown) - which is MUCH MORE READABLE than README.rst (resucktured text)
• Help Messages - Cleanup "--help" messages, making them neater and cleaner.
• Documentation - Move "Process Identification" section below Design, for better grouping.
• Help Messages - Cleanup --readme output to remove escapes
• 1.5.3 - Jun 17 2016
• Allow 'usrsvc --help' and 'usrsvc --readme' without ~/usrsvc.cfg (as
  intended)
• 1.5.2 - Jun 16 2016
• Allow "usrsvc stop" on Programs with enabled=0 (the intention is that
  usrsvcd will not manage it). This makes sense to suspend a program running,
  stop it, and resume later.
• 1.5.1 - Jun 9 2016
• Fix typo in docs (mail_alerts -> email_alerts)
• 1.5.0 - Jun 1 2016
• Change the way that process start matching works, such that it has much better support for when the process listed as "command" actually launches a child process, which is to be matched by "proctitle_re"
• Add support for "--version"
• Remove lock if usrsvc has an error, which prevents a needless up to 30 second delay (if usrsvc hits a bug)