minor improvements, add << and >> mappings for cycling through the qf types
move logic to an autoload plugin; fix timeouts in plugs
bump version numbers
update README
add autoload to Makefile
- don't suppress error messages
align plugs
- remove workaround with an empty line number or search pattern
- remove redundant code to format lists
- preserve cursor position when saving qf or location list
update copyright information
update README
Add editqf_no_type_mappings to disable "types"

W and E are common motion commands that may be used in the quickfix
window, so add an option to prevent them from being mapped. The second
list of mappings we always want to map because they don't make sense in
the quickfix window (which is not modifiable).

For consistency, we also exclude I.