impactr 0.4.1

• Fixed an issue with saving the non-wear plot with remove_nonwear() (#2).
• Change the name of the "valid_observation" to "valid_file" in the non-wear summary to better express its meaning.
• Limited the number of characters of the non-wear plot title to 50 characters, preventing the plot title to exceed the plot window limits. In case of large (n. char. > 50) titles, remove_nonwear() automatically crops it.
• Return NA in the summary variables from summarise_loading() whenever the number of detected peaks is 0.
• Change the coefficients of the prediction models for walking/running to match the final version of the published paper.