Less version 478
Version 478 was released on 22 Jun 2015.
These are the differences between version 458 and version 478:
-  Don't overwrite history file; just append to it.
This behaves better when multiple sessions are running less simultaneously and using the same history file.
-  New command ESC-G goes to end of currently buffered data in a pipe.
-  Disable history feature when compiled with LESSHISTFILE set to "-".
-  In more-compatible mode, make the -p option apply to every file opened,
not just the first one.
-  In more-compatible mode, change the -e option to work like -E, not -EF.
-  Treat multiple CRs before LF are like one CR (all the CRs are hidden).
-  Allow "extra" string in lesskey file to append to a multi-char command
(like a search pattern), without executing the command.
-  Ignore -u/-U setting while viewing help file, so that 
underline and bold chars are displayed correctly.
-  Improve detection of "binary" files in UTF-8 mode.
-  Fix bug with ++ commands.
-  Fix bug where prompt was sometimes not displayed with +G.
-  Fix possible memory corruption 
-  Fix bugs and improve performance in ampersand filtering.
-  Automate construction of Unicode tables from Unicode database.