Changes in version 1.2.1 (2023-05-19)

New features or changed behaviour of old functions
    o   none

Changes in version 1.2.0 (2023-05-19)

New features or changed behaviour of old functions
    o   new function 'branched'

Other
    o   add dependency on sf
    o   remove dependency on rgeos, rgdal, maptools
    o   housekeeping (vignette, files)
    
Changes in version 1.1.4 (2021-05-04)

Other
    o   fixed URLs

Changes in version 1.1.2 (2021-05-03)

Other
    o   update arvicola dataset to 3-D form (secr>=3.0.1)
    o   add rmarkdown to Suggests as requested by CRAN 
    o   packages sp and igraph moved from Depends to Imports
    o   Depends R >= 3.5.0 (serialization issue)

Changes in version 1.1.1 (2017-12-13)

Other
    o   avoid change of directory in examples
    o   updated vignette

Changes in version 1.1.0 (2017-05-03)

Other
    o   rgdal::readOGR used to read shapefiles (maptools::readShapexxx deprecated)
    o   compatible secr 3.0.1

Changes in version 1.0.5 (2015-01-11)

Other
    o   CITATION file uses package metadata

Changes in version 1.0.4 (2014-12-08)

New features or changed behaviour of old functions
    o   none yet

Other
    o   editorial changes to help pages
    o   removed dependency on rgeos (still required for clipmask)
    o   replaced NA with zero in input to graph.adjacency 

Changes in version 1.0.3 (2014-12-02)

New features or changed behaviour of old functions
    o   read.linearmask() allows for multiple Line objects within each
    Lines object of a SpatialLinesDataFrame
    o   subset.linearmask() acquires argument droplinesbeyond for
    cleaning the SLDF attribute
    o   snapPointsToLinearMask() now snaps to the vertices of the graph
    attribute, rather than trying to use the maptools function snapPointsToLines()
    o   showpath() also returns mask coordinates along each selected path
    o   checkmoves() new utility function for detecting extreme moves
    o   plot.linearmask() now uses plot.mask allowing a wider range of options

Other
    o   first CRAN release
    o   addedge and deleteedge renamed addedges and deleteedges
    o   vignette considers breaks in graph and new secr function 'checkmoves'

Changes in version 1.0.1 (2014-11-02)

New features or changed behaviour of old functions
    o   read.linearmask will read directly from a polyline shapefile
    o   interpoint distances within a line are coerced to the correct spacing value
        (no longer simple Euclidean distances) 
    o   direct and precise algorithm for placing mask points along lines (no longer calls spsample) 
    o   edge editing functions redefined; function showedges() replaces showskips()
    o   make.line() enhanced (randomstart, endbuffer, clusters, multiline masks etc.)
    o   new function cleanskips() removes superfluous joins (automatic in read.linearmask)

Bugs fixed
    o   none yet

Other
    o   now 'Depends' on igraph package (always loaded)
    o   no longer exports alongmask() (use make.line())
