new sprites, improved collisions, lot of changes

Merge pull request #87 from jsmolina/features/improve

improving game experience

new intro screen

4.0.1

Delete SP1_crash_course.md

Latest

release 4 including lot of fixes.

Better sprites, better udgs

Merge pull request #84 from jsmolina/feature/dog_masked

Feature/dog masked

Mask to misifu sprite

Merge pull request #76 from jsmolina/feature/follow_tutorial

follow tutorial

Use impressive Jarlaxe's graphics improvements

Merge pull request #73 from jsmolina/feature/new_z88dk_and_sprites

Feature/new z88dk and sprites

Use sinclair joystick 2 instead of 1

Fixes: sinclair joystick overlaps with pause button (zero). Thanks Dario!

Sinclair joystick and intro menu

R restarts game

Fix invisible bincat issue and intro cartoon

Fixed issue with invisible bin cat disallowing cat to jump in bin while not being seen.

Added intro screen (only 128k)

Transparent misifu fix

Fixes an issue after misifu being killed by dog.