This stable maintenance release fixes minor bugs and adds new functions in the math and statistics area.

- A new set function
`union`works like`(unique (append ... ))`. - Two new predicates
`even?`and`odd?`test the parity of integers. - The new
`prob-t`function returns the one-tailed probablitiy of a*Student's t*statistic to be equal or greater than the observed value. - The new
`prob-f`function returns the probablitiy of*F*statistic to be equal or greater than the observed value. - The new
`crit-t`function calculates the critical value of*Student's t*for a given one-tailed probability. - The new
`crit-f`function calculates the critical value of*F*for a given probability level. - The
`prob-z`and`crit-z`functions now handle probabilities less than`0.5`for negative*Z*-values. - The new
`corr`function calculates a*Pearson*product-moment correlation coefficient between two variables. - The new
`stats`function calculates some basic statistics for a data vector. - The new
`t-test`function performs a*Sudent's t-test*for dependent and independent date samples. - An additional
`true`flag in the`char`function can turn on 8-bit byte indexing and translation instead of multibyte UTF-8 indexing and translation in UTF-8 enabed versions of newLISP. - A
`true`flag in the`file?`forces the return value to the name string of the file, if it exists. - Versions compiled for the new extended FFI now show "libffi" in the banner.
- Better mean-value adherence of the
`normal`function. - In the extended ffi the
`char*`type will now only accept strings as arguments. For string or buffer integer addresses`void*`must be used. `import`now can load a library without importing a function. This is necessary on Mac OSX, Linux and other Unix when external functions are referenced from an imported function and the library is not loaded automatically.

`newlispdoc`now outputs a UTF-8 meta tag in the HTML header.- A new module
`gsl.lsp`imports SV, QR and Cholesky decomposition and solver functions from the GNU Scientific Library GSL. Both SV and QR can handle rectangular non-square matrices for decomposition of*A*and solving*Ax = b*for*x*. - Updated
`plot.lsp`now also has a`plot:XY`command and has been added to the standard modules in the source and binary distributions.

- The
*day-of-year*value in`date-list`now starts with`1`instead of`0`. The previous version made the same change for the`now`function. - The
`command-event`function now trims trailing line-feed characters in all compile and platform flavors. Previously only UNIX and readline lib enabled versions would trim the string passed by`command-event`. - A fix for
`pack`when packing structures made with`struct`in 64-bit newLISP.

Except for bug fixes and behavior of `char*` argument types in the extended
`import` ffi interface, this version is fully compatible with previous versions.