Float types

[Yehouda]

1. In t/easing-test.lisp, it calls the ease-f with short-float (03s0) instead single-float (which would be 03f0, exponent chracter 'f' insteaf of 's'). That causees it to break on implementation that distinguish between short-float and single-float.

2. In src/easing-single-float.lisp, it is uses many short-float numbers when presumably intended single-float.

3. Both in the test and in the code, there are various floats without the exponent character, which means it reads according to the default of the reader (*read-default-float-format*). It really should always have the exponent character for consistency.