Tube Squeezer update

one piece tube squeezers - updated 10.1.2015.

These are one piece tube squeezers. I added two other sizes to fit my friend's tubes of paint.

10.1.15 update: the 3W tube squeezer were modified for better printing.

I renamed the files so that the slot length and width are in the file name. If the file name has "dup#" "#" is the number of copies in the file. That is "squeezer_45L_1.5W_dup4.stl has a slot 45 mm long, 1.5 mm wide and there are 4 copies of that squeezer in the .stl

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