assuming it is still relevant, it might useful to repost here the official
`nim.cfg` @Araq's recommendation from [RC1
discussion](https://forum.nim-lang.org/t/8404#54227) (should this be added to
the release notes?):
--experimental:strictEffects
# Turn on the new refined effect tracking. It enables the new .effectsOf
# annotation for effect polymorphic code ("this code raises if the
callback does so").
--experimental:unicodeOperators
# Allow the usage of Unicode operators. I hope that some of
# the scientific computing libraries use this soon.
--experimental:overloadableEnums
# Allow enum field names to be overloaded. I hope some libraries make
good use of this feature.
--define:nimPreviewDotLikeOps
# Dot-like operators (operators starting with `.`, but not with `..`)
# now have the same precedence as `.`, so that `a.?b.c` is now parsed as
`(a.?b).c`
# instead of `a.?(b.c)`.
--define:nimPreviewFloatRoundtrip
# Enable much faster "floating point to string" operations that also
produce
# easier to read floating point numbers.
--gc:orc
# The one and only way to do memory management in modern Nim.
--define:nimStrictDelete
# make system.delete strict for index out of bounds accesses.
Run
