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dynwrap :: Creating a trajectory

Methods to create a trajectory

`add_branch_trajectory`	Create a trajectory given its branch network and the pseudotime of the cells on one of the branches
`add_cell_graph`	Constructs a trajectory using a graph between cells, by mapping cells onto a set of backbone cells.
`add_cluster_graph`	Constructs a trajectory using a cell grouping and a network between groups. Will use an existing grouping if it is present in the dataset.
`add_cyclic_trajectory`	Constructs a circular trajectory using the pseudotime values of each cell.
`add_dimred_projection`	Constructs a trajectory by projecting cells within a dimensionality reduction onto a backbone formed by a milestone network. Optionally, a cell grouping can be given which will restrict the edges on which a cell can be projected.
`add_end_state_probabilities`	Multifurcating trajectory with end state probabilities
`add_linear_trajectory`	Constructs a linear trajectory using the pseudotime values of each cell.
`add_trajectory` `is_wrapper_with_trajectory`	Define a trajectory dataset given its milestone network and milestone percentages or progressions
`wrap_data` `is_data_wrapper`	A data wrapper for datasets and trajectories