Limit memory usage scope

[maxonfjvipon]

Current implementation of memory object leads to potential memory leaks because we except end-user to free allocated memory block. Of course user may just forget to do it. It's called "Hello, C++".
We should limit the scope of memory usage and free allocated memory automatically when scope is ended.
We can do using abstract objects:

(memory 0).alloc > mem
  [m] # here m is memory itself
    seq > @
      *
        m.write 42
        m.write (m.plus 1)
        m.read 

When abstract object finishes its execution, memory is freed automatically

[maxonfjvipon]

@yegor256 check this out:

# Test.
[] > writes-into-memory
  memory > mem
    0
    [m]
      seq > @
        *
          m.write 10
          # do something else
  mem.eq 10 > @ # true

What do you think if this abstract object (I called it scope) would return last data written into memory? So
memory dataizes scope, reads last written data, frees memory and return the data.

[yegor256]

@maxonfjvipon sounds good

[yegor256]

@maxonfjvipon I believe, this change deserves a blog post (and a new minor release)

[maxonfjvipon]

@yegor256 let's make a new release with tag 0.36.1