RStoolbox v1.0.0

Updating MESMA, minor changes before major release

New:

• mesma() now better differentiates SMA and MESMA: For single endmember unmixing, each supplied endmember represents a class to unmix (row by row). For multiple endmemeber unmixing, the column class can be used to group endmembers by class. If multiple endmembers per class are provided, mesma() will compute a number of SMA (determined through the new argument n_models) for multiple endmember combinations drawn from endmembers and will select the best fit per pixel based on the lowest RMSE. See ?mesma for details (fixes #57, reported by @ytarazona)

Changes:

• mesma() now implements the sum to one constraint by default (argument sum_to_one) (fixes #62, reported by @michaeldorman)
• added a new example to mesma() to reflect the changes