rmf

• Replaced the compressLine function with the rmf::addRow method. Added the reverseRows method to use in cases where the original energy bins are not in increasing order. Added calcGaussResp function to calculate the gaussian response for one row of a response matrix.

• Added rmf::clearMatrix method to wipe only the response matrix part of the rmf object.

• Added rmf::shiftChannels to shift channels.

• Added support for grating orders to the rmf class.

• Corrected error in rmf when reading a file with MATRIX as a fixed length vector column.

• Fixed a counting from 0 or 1 bug in rmf::RowValues.