Enable bracket syntax for from [xyz, abc] import nil

[awr1]

In Nim, you can import multiple modules in concisely as:

import std / [sequtils, parsexml]

However, you cannot do the same using the from syntax, (particularly if you want fully qualified imports on multiple modules) which I feel is not consistent, e.g.

from std / [sequtils, parsexml] import nil # error!

If others agree with adding this, unfortunately this will require a bit of a grammar change, (although nothing too drastic in my opinion) because:

importStmt = 'import' optInd expr
              ((comma expr)*
              / 'except' optInd (expr ^+ comma))
fromStmt = 'from' moduleName 'import' optInd expr (comma expr)*

[timotheecour]

duplicate of #76 (proposal 1); see also its proposal 2 (which is a compatible addition to proposal 1)
proposal 1 is actually easy to implement IIRC

[awr1]

Will close as a duplicate of #76.