amt 0.0.4.0

major changes

• Added an alias to mk_track called make_track.
• mk_track gained a new argument all_cols that allows to carry over all columns to track.
• mk_track gained a new argument check_duplicates that allows to the user to specify if temporal duplicates should give an error or not.
• Added hr_kde to calculate Kernel home ranges.
• steps now uses difftime to calcualte time differences.

minor changes

• Removed: Depends tidyverse
• Fixed errors with lubridate::Periods within data_frames

amt 0.0.3.0

minor changes

• Fixed vignette titels.
• Added Rdpack to suggest