dtw_align: Align with dtw two lineages
In strayMat/warpDE: Differentially expressed genes in cell lineages

Align two lineage with dtw, fit the aligned data and plot the results

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dtw_align(data, gene, reg.f = "loess", span = 0.75, s.df = 4,
  norm = "L2", window.type = "none", window.size = 50, align.show = F,
  legend.show = F, duplicate.keep = F)

`data`	a `warpDEDataSet` with genes to be ranked.
`gene`	character, a gene of interest.
`reg.f`	a function to perform regression, either "ns" for natural splines, "loess" or "splines" (default is "loess").
`span`	numeric, a smoothing parameter for the regression function (default is 0.75, see `gam::lo` for details).
`s.df`	numeric, a smoothing parameter for the nsplines regregression (default is 4, see `splines::s` for details about regularization).
`norm`	character,("L2" or "L1") the norm to be used for the dtw distance (default is "L2").
`window.type`	charcater, the window type for the computation of dtw, (see `dtw::dtw` for precisions; default is "none").
`window.size`	integer, the size of the warping window (default is NULL, no window.size), see details.
`align.show`	logical, if we want to plot the alignment.
`legend.show`	logical, if the legend is wanted (default is FALSE).