Added tests to arithmetic, fixed bugs, added MULTF.
Added variants of rounding functions.
Added L2 norms.
Factored out square of L2 norm.

This is a commonly used case when we don't need the square root.

No separate tests are needed.
Updated readme.
Added e[12](log|exp) to the export list.
Added tests for elog/eexp.
Added normalize-probabilities (with tests).
Added subintervals-in.
Added biconditional.
Added tests for some utilities.
Fixed pathnames for system definition.

#P"src/" is not portable, while "src/" is (for ASDF).
Fixed test.

Was using equalp, which is not valud for intervals.
Added slices to wrapped matrices, with tests, dependency on cl-slice.
Re-added univariate rootfinding routines.
Mentioned rootfinding in the readme.
Added nickname to package.
Added CURRY* (experimental).
Added with-double-floats.
Re-added quadrature.