do not remove left butting parens if preceded by function

do not remove butting parentheses if first parentheses are argument to function

fix trig exponent move to include one more pair of parentheses if trig is followed by exponent

handle expression-type exponents for trig expressions

remove extra brackets and/or parentheses from exponent arguments

remove break and nobreak tags

minor edit to unnecessary multiplication removal

do not remove * when two digits are together

Merge branch 'develop'

keep parens for multiple-nested exponential expressions

Merge branch 'develop'

fix to keep parentheses around exponentials in square roots

Merge remote-tracking branch 'origin/master'

Merge branch 'develop'

delim count update using tr instead of regex