Allow to use ',' instead of ';'

General rule is that , ; /n are equal

```
y = x, z = y+1
```

```
f(x) = x**2, out = f(12)
```

```
winter = [
       'Dec'
       'Jan'
       'Febr'
]

summer = [`Jun`; `Jul`; `Aug`]
```

```
point1 = {x = 1, y = 2, z = 3}
point2 = {x = 1; y = 2; z = 3}
```


```
a = if true: 
    print('hi), x  
elif: 
    true
else:
    false
```



