- fix rebalancing and rebalancing demos
- update roxygen docs
- bump version

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/blotter@1594 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
- remove traiing function not pushed to R-Forge svn yet

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/blotter@1595 edb9625f-4e0d-4859-8d74-9fd3b1da38cb