Improvement of conjunction handling

[maxaalexeeva]

Cases currently not handled by untangleConj:

• _ αs and αc are soil evaporation coefficient and crop transpiration coefficient, respectively._ (here, we extract two separate conjDefs with multiple variables attached one def and there is no way to know whether the definition should be attached to the first or the second var)
• where RHmax and RHmin are maximum and minimum relative humidity, respectively (here, maximum is no included into the def)

Possible solutions:

• allow mult defs in conjDefinitions and then, if equal number of vars and defs, align them as var1->def1, var2 -> def2, etc
• if there are multiple vars but one def, check if there is a conjoined element to the left (then attach var 2 to this def) or a conjoined element to the right (then attach var 2 to this def); need to generalize this somehow to more than two conjoined elements, eg by checking the number of conjoined elements to the left and right.
• to solve the 'maximum' example, might need to expand on conj_and or include that in the rule.