zero-knowledge

#306 addresses a term-precedence bug with exponentiation. However, we do not have an end-to-end test case for this.
It should be included, ideally for all operators.

🐛 Bug Report

using an invalid character in an import name gives no error information

Error Message

Error [EPAR0370000]: ~
    --> D:\Work\leo-playground\src/main.leo:1:12
     |
   1 | import test~.lib.func;

Expected Behavior

it should display the same error message as when an uppercase letter is used:

Error [EPAR0370012]: package names must be lowercase 

Describe what you want implemented
Remove the bit_iterator macro.

Describe "Why" this is needed
As far as I can see we only invoke the macro once to create BitIterator8 so I don't see the need to have a macro for it. Creating BitIterator8 directly is much clearer.

Describe alternatives you've considered
Leave as is.

Additional context
NA

Currently, comments in Miden assembly must be surround by # characters. Thus, even for single line comments we must write:

# this is a comment #

It is a bit annoying that we need to terminate single line comments with #. The main motivation for doing so was ease of parsing, and in fact parsing this style of comments is very easy (they are stripped out from the source code as im