operator call unification experimate

"a!=aaa" is sugar for (identical to) "a.ne(aaa)" parses to:
[{
  property:"a",
  operator:"ne",
  values: ["aaa"]
 }]
 

"a=aaa" is sugar for (identical to) "a.eq(aaa)" parses to:
[{
  property:"a",
  operator:"ne",
  values: ["aaa"]
 }]
 

"a=in=2" is sugar for (identical to) "a.in(2)" parses to:
[{
  property:"a",
  operator:"in",
  values: [2]
 }]
 

"foo(2,4)" parses to:
[{
  operator:"foo",
  values: [2,4]
 }]
 

"a.b=lt=2&c=3" is sugar for (identical to) "and(a.b.lt(2),c.eq(3))" parses to (note that the top level array is always implied to be a child of "and" operator):
[{
  property:["a","b"],
  operator:"lt",
  values: [2]
 },
 {
  property:"c",
  operator:"eq"
 }
]

"a=2|a=3" is sugar for (identical to) "or(a.eq(2),a.eq(3))" parses to:
[
 {
  operator:"or",
  values:[
   {
    property:"a",
    operator:"eq",
    values: [2]
   },
   {
    property:"a",
    operator:"eq",
    values: [3]
   }
  ]
 }
]