SSNbler 1.1.1

Minor updates

Fixed bug in lines_to_lsn, which prevented tonodes from snapping when the distance between them was snap_tolerance/1e4 < distance < snap_tolerance. Now, nodes are snapped if the distance between them is < snap_tolerance.

Modified lines_to_lsn() and added various internal helper functions to support topology checking in parallel. Overcomes a 32-bit matrix indexing limitation in R (2^31-1), which in practice had limited the number of input streams LINESTRING features to 46340.

Fixed bug in updist_sites() when `length_col already exists.
Fixed bugs in updist_sites() and afv_sites() which caused error when skipping sf object and length(sites) == 1.
Fixed bug in updist_sites() which occurred when the sf object didn’t exist in lsn_path and arguments save_local = TRUE and overwrite = FALSE.
Fixed bug in lines_to_lsn(), which caused the function to fail when check_topology = FALSE.
Fixed bug in lines_to_lsn(), which caused some outlets to flagged as dangling node errors when they were not within topo_tolerance of another edge vertex or end node.
Fixed logic error in lines_to_lsn(), where outlets with three features flowing in were not being flagged as toplogical errors.
In lines_to_lsn(), added a check whether line features in streams have a length shorter than snap_tolerance. This prevents the end nodes of a short line feature from being snapped together (forming a loop) when check_topology = TRUE. When this occurs an informative error message is returned.