Extension of stdlib

[Shvandre]

I think that two important functions are missing.

asm fun myCode(): Cell { MYCODE }

asm fun emptyAddress(): Address { b{00} PUSHSLICE }

Here is possible implementation. Maybe emptyAddress() should me named addressNone() ? because it is addr_none in block.tlb

[anton-trunov]

Maybe emptyAddress() should me named addressNone() ? because it is addr_none in block.tlb

yeah, addressNone sounds better to me