Changes in 1.2.2 * Edited the Description field of the DESCRIPTION file to mention where to access MfUSampler archive, which is one of the suggested packages by sns. Changes in 1.2.1 * Modified the man pages to include a single keyword per line. Changes in 1.2.0 * Modified the package vignette to make the code depending on 'suggest'ed packages conditional, per CRAN request. Changes in 1.1.2 * Added CITATION file to reference JSS paper. * Added reference to JSS paper to .Rd files. Changes in 1.1.1 * Changed maintainer email address. Changes in 1.1.0 * Added support for numerical differentiation, using numDeriv package. * Added log-density validation function, sns.check.logdensity. * Major revision of vignette. * Edited help files, including splitting of sns and sns.run. Changes in 1.0.1 * Added match.arg to handle "method" argument in "ess" function. * Revised vignette. Changes in 1.0.0 * Added state space partitioning to sns(), using recursion. * Refined sns.run() interface. * Refined print/summary S3 methods. * Added print.summary.sns, plot.sns, predict.sns, summary.predict.sns and print.summary.predict.sns methods. * Improved documentation, including new examples. * Refined ess() implementation and interface, and added logic to handle zero-variance cases. * Added vignette. Changes in 0.9.1 * Made improvements and corrected typos in the documention. * Fixed typo in an author name. * Fixed corner cases bugs in sns.run().