fix #220 Accessing enclosing function arguments from subfunctions.
handle case where x does not exist on KTREE
simpler
Update README.md
fix #220 again
add conditional
simpler fix for 220
Update README.md
eliminate unnecessary flag
grnt should be set to 0 when reading new 'lines'
fix #244: {{[a]a,x,y}}[1][2]3
fix #247: {{[a]a,x,y,z}}[1][2][3]4
remove some unnecessary variables
_ssr with and without the comma
get rid of magic number
fix repeatability problem
fix #250: Does _ssr work?
since need x for cd, might as well use it