add value case for assumable constants

rework constants and use match cases for parsing

split code into different files and remove complexity option

edit preferences lookups as per guidelines

patch disconnected sockets when creating a group

bump version

fuzzy function matching, ordering by complexity,

default values for groups

assuming constants, isqrt and exponent special cases

Update README.md

add separator in preview, set default variable mode to INSERTION

make input types horizontal

bump version

add variable sorting

add preview generation