todo

 √ structs @done (18-01-01 21:06)
   √ handle more complex types @done (18-01-01 21:06)
   √ test auto deref @done (18-01-01 15:01)
 √ arrays @done (18-01-02 17:06)
 √ less than and greater than @done (18-01-02 22:59)
 √ while loop @done (18-01-03 13:11)
 √ range loop @done (18-01-03 13:11)
 √ procedures @done (18-01-04 00:14)
 √ print numbers (big milestone!) @done (18-01-04 18:56)
 √ refactor ir for better pruning (no more type switching) @done (18-02-19 13:48)
 √ support types of different sizes. Right now pointers to u8 are broken for example @done (18-02-22 20:47)
 √ proper [] operatator @done (18-02-23 13:37)
 x tokenizer should break up spaces better. Search for todo in parse_expression.go @cancelled (18-02-23 13:44)
 √ can't loop and use var to access array @done (18-04-18 20:44)
 ✔ return values @done (18-06-11 20:23)
 ✔ continues/breaks @done (18-06-11 20:23)
 ✔ ensureVarInRegister should take multiple arguments and make sure it doesn't swap a var that it just brought into a register @done (18-06-20 12:50)
 ✔ zero out plain declarations @done (18-06-23 20:51)
 ✔ :morecopies copying full structs @done (18-06-23 20:51)
 ✔ factor out signExtendToMatchSize @done (18-06-19 20:07)
 ✘ do some reserach about signedModulous -- how do we do s32 *= s64? what if on the right side the sign bit is set? @cancelled (18-07-03 19:11)
 ✔ more aggressive compile time evaluation @done (18-07-25 09:11)
 ✘ flag for turning off compile time evaluation and run tests on both @cancelled (18-07-25 09:11)
 ☐ retire vars that are not named vars / loop control var
 ☐ typecheck errors interrupting each other
 ☐ for i := 0..num loops, the body should be able to mutate i
 ✔ test passing a lot of parameters @done (18-07-25 11:44)
 ☐ returning a value from a function that doesn't declare a return type
 ☐ unbalanced braces
 ☐ hidden parameter for returning large values can be clobbered
 ☐ bitwise operators
 ☐ be less barbaric about saving registers in proc prologue
 ☐ :multireturn
 ✔ &structA.field @done (18-07-11 21:22)
 ✔ &arr[409] @done (18-07-11 21:22)
 ✔ arr[533].dkd = 300 @done (18-07-04 15:11)
 ☐ we need a print_signed_int
 ✔ proc argument type checking @done (18-06-23 20:51)
 ☐ proc overloading?
 ✔ complex expressions like if (rettrue() && retfalse() == false) @done (18-06-11 20:24)
 ✘ increment/decrement @cancelled (18-07-21 23:58)
 ✔ better typing for numbers. There is a hack in place for assigning an int to u8 atm @done (18-06-16 00:41)
 ✔ the whole Unresolved type situation @done (18-07-11 21:22)
   ✔ procs that take parameters which reference structs -- they are left as unresolved type for now @done (18-06-11 20:25)
   ✔ can't have array of structs/array of pointer to structs in your struct @done (18-07-03 23:03)
   ✔ can't do var foo *somestruct @done (18-07-03 23:03)
   ✔ struct nesting @done (18-07-11 21:22)
 ✔ better pruning @done (18-06-15 19:55)
 ☐ pruning2.al. We can get better ir by analysing read-only use of vars
 ☐ unsigned mult, div
 ✔ error reporting @done (18-07-11 21:23)
   ✔ parse errors: binary operators missing operands ("i++" parses atm) @done (18-07-11 21:23)
 □ better type casting. Can't cast to a pointer type atm