Changes in version 1.23.1                        

    o   fix broken test due to changes in RF imputation

                       Changes in version 1.15.1                        

    o   fix plots due to breaking changes in ggplot2

                        Changes in version 1.3.4                        

    o   Added option to constrain spar values for QCRSC.

                        Changes in version 1.3.2                        

    o   Added inputs/outputs for pqn.

    o   Fixed glog plot bug.

                        Changes in version 1.2.1                        

    o   Account for missing injections in QCRSC.

                       Changes in version 0.99.6                        

    o   Updated vignettes.

                       Changes in version 0.99.2                        

    o   Support for SummarizedExperiment class.

    o   Updated documentation and vignette.

    o   Added functions for QCRSC algorithm of signal-batch correction for MS data.

                        Changes in version 0.2.6                        

    o   glog transformation can use fixed lambda value input.

    o   Plot to visualise output of glog lambda value optimisation.

                        Changes in version 0.2.5                        

    o   Pre-calculated  mean reference values can be used with PQN normalisation
	function.

                 Changes in version 0.2.4 (2019-08-07)                  

    o   Updated documetation and usage examples.

    o   Refactored glog scaling function.

    o   PQN normalisation supports using all samples to calculate correction factor.