NEWS for investr package

Changes for version 1.0
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* Added functions
* Fixed roxygen documentation

Changes for version 1.0.1
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* A few minor bug fixes
* Slightly better documentation

Changes for version 1.1.0
====================
* invest now accepts objcts of class 'lme' (experimental)
* A few minor bug fixes
* Various code improvements
* Added more tests

TODO:
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* Add bootstrap option to calibrate and invest
* Add method for objects of class 'mlm' (i.e., multivariate calibration)
* Heteroscedastic errors?