Implements support for word form recognition for keyphrases in English. This means that e.g. book will be recognized in the text when the keyphrase is books.
Implements an improved algorithm for the keyphrase distribution assessment to check whether the keyphrase usage is evenly distributed throughout the text.
The following assessments will also count synonym matches as keyphrase matches:
Image alt attributes
Keyphrase in introduction
Keyphrase in meta description
Keyphrase in subheading
The analysis for related keyphrases only shows assessments relevant for the specific keyphrase. It omits assessments that are non-keyphrase-related and assessments that should only be applied to the focus keyphrase.
For the keyphrase density assessment, the upper boundary for a good score is higher when word form recognition is available, since in that case the analysis is able to pick up more matches.
Fixes a bug where the insights analysis on the tools page would not work.