Psifr

This version adds more documentation, including additional explanation of how to interpret analysis results. A paper under review at JOSS has also been added, which gives background on the analyses implemented in the package and differences from other similar packages.

Other changes:
* Improved figure legends on raster plots.
* Fixed data filtering when using scalar float values.
* Improved automated build settings.
* Improved test coverage of data handling and plotting.

This update adds:

* A utility for loading sample data.
* An option to set plot marker size.
* A fix to a problem when using a transitions test that only references the previous item.
* Improvements to the documentation.

This release adds support for different forms of conditional response probability and percentile rank analysis, flexible plotting functions, probability of nth recall analysis, and profiling tools.

Added features:
* Plotting functions for analyses that generate a curve
* Swarm/errorbar plots for categorical data
* Raster plots
* Conditional response probability by category
* Conditional response probability by distance
* Recall probability by output position
* Profiling using asv and snakeviz
* Percentile rank measures by lag and distance