examples/shoot: add vectorial images from PyCaptain

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
examples/shoot: use new images

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
tests: update shoot_logic sav file

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
pep8analysis: rename its Error class to P8Error.

One day, name conflicts will be resolved sanely... one day...

Signed-off-by: Jean Privat <jean@pryen.org>
lib: add standard/error.nit

This could help people to implement some error handling in libraries.

It is inspired by #701 and ideas from Alexandre Terrasa.

Signed-off-by: Jean Privat <jean@pryen.org>
Merge: Proposition of a new image source for `shoot`

The ressources are extracted from the projet PyCaptain. See `ships.svg`.

Pull-Request: #421
Reviewed-by: Jean Privat <jean@pryen.org>
Reviewed-by: Alexandre Terrasa <alexandre@moz-code.org>
Merge: lib: add standard/error.nit

This could help people to implement some error handling in libraries.

It is inspired by #701 and ideas from Alexandre Terrasa.

Pull-Request: #707
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>
Reviewed-by: Alexandre Terrasa <alexandre@moz-code.org>