[julia-users] constants environment

[Yakir Gagnon]

I often define a bunch of constants at the beginning of a program. Wouldn't 
it be nice if we could start an environment of constants to avoid writing 
`const` before every one of the rows at the beginning of a program? 
Kind of like:
```Julia
begin const
 a = 1
 b = 2
 c = "neverChange"
end
```
instead of:
```Julia
const a = 1
const b = 2
const c = "neverChange"
```