Added ANY_of_exprs to AnswersTests2.R
update docs
cosmetic change
Merge pull request #161 from swirldev/ANY_of_exprs

Any of exprs
update NEWS
add regression models to recommended courses
update version and NEWS
Merge pull request #162 from swirldev/regmods

Add regression models to recommended courses
Corrected order of mergeList arguments when updating delta during automatic detection of new variables.
Merge pull request #169 from swirldev/mergelist_delta_bugs

Corrected order of mergeList arguments
increment version for mergeLists fix
make swirl play nice with testit function from swirlify
from and to feature prototyped for test mode
complete first part of lesson when starting partway thru in test mode
fix testit() no args situation
check that 'to' is greater than 'from' in test mode
fix bug related to lesson cutoff
remove extraneous code
Merge pull request #170 from swirldev/fromto

Extend 'test' mode functionality to accommodate new swirlify features
add any_of_exprs() to AnswerTests docs