changed the first attack of mimic normal chest and mimic spiked chest

fixed the shadowsize of mimic stone chest

the attack sound and attack are now synchronized

some mimic chests now makes a new sound when shoots

mimic normal chest and mimic spiked chest now use a new monster as a template

fixed some small things

mimic chests now drops more pickups if you have the mom's key

fixed a small thing

fixed some small things

increased the chance to found a mimic chest