Check List

• Tests have been run in packages where changes made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

Description of Changes Made

This PR updates DAX API function reference. Changes:

• ALL function supports arguments and is functional
• CALCULATE function supports creating a nested filter context, but cannot override CALCULATETABLE filter context
• CALCULATETABLE function supports creating a nested filter context
• DISTINCT (table) function supports filter context
• GROUPCROSSAPPLY function caveat is documented (acts as a SUMMARIZECOLUMNS function)
• KEEPFILTERS function is now functional
• IGNORE function is now functional
• NONVISUAL function is now functional
• ROLLUPADDISSUBTOTAL function supports grand total filter
• SAMPLEAXISWITHLOCALMINMAX function behavior is adjusted (acts as TOPN function now)
• SELECTCOLUMNS function does not require aliases
• SUMMARIZE function supports named expressions
• TOPN function plans complex N values as 50000
• UNION function is supported