Add q and Q alias for single quote and double quote text object
Minor code cleanup in normal.cc
InputHandler: selection first item when entering menu mode
Try prefix completion and then subsequence completion for option names

fixes #4
fix select_to_eol behaviour when on empty line

fixes #3
Document autoediting in doc/autoedit.asciidoc
Add support for absolute paths in find_file

fixes #11
CommandManager: support completion of chained commands

Command completion now work after a command separator (;)

fixes #19
Document the IRC Channel