Append '=' to CONFIG_PATTERN
Anti-feature-creep: Remove -v, --verbose option

And all trace output.
Anti-feature-creep: Remove -c, --config option
Read config files at beginning of script

Now that we don't accept them on the command line there is no reason not
to do this.
Process positional parameters once only

Now that we don't need to read config files in between.
Anti-feature-creep: Don't look for a default viewer

Require the user to configure it instead.
Remove 'Overrides config files' from -t, --timeout help
Minor improvements to help text
Don't expand defaults in help message

This could get confusing since both config files and commandline
arguments can change these values. For instance, passqr -t 1337 -h would
state that the default timeout is 1337 seconds.
vimrc: Use FileType trigger to set README.md textwidth
vimrc: Recognize *.bash-completion and *.conf as shell script
Add /etc/passqr.conf with examples
Bump version number
Version 1.2.0

- Reverse some feature creep
  - Remove trace output and -v, --verbose option
  - Remove -c, --config option - only read predefined config files
  - Don't look for a default viewer if none is configured
- Remove dependency on ImageMagick
- Add /etc/passqr.conf with example configurations
- Minor improvements to help text

Signed-off-by: Emil Lundberg <lundberg.emil@gmail.com>
Exit with same status code as pass if it fails
Use timeout instead of background-sleep-kill
Exit with code 0 if timeout times out
Use tmpfile instead of direct pipe to viewer

This allows for much greater flexibility in choice of viewer.

Also update config file with examples for compatible viewers.
Bump version number
Version 1.3.0

Changelog:
- Use the same exit code as pass if it fails
- Use timeout instead of background-sleep-kill
- Use tmpfile instead of piping image into viewer via stdin
  - With the exception of ImageMagick's display, the compatible viewers
    did that behind the scenes anyway.
  - Update config file with examples for compatible viewers.

Signed-off-by: Emil Lundberg <lundberg.emil@gmail.com>