Add new_const() for const construction and revert new to old version #183
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The new() function is significantly faster, it optimizes better at the
moment/in current rust. For this reason, provide a const fn constructor,
but not as the default
new
.It's not expected that the Rust optimization problem can be fixed in the short
term, so we just revert the change to
fn new
. The performance issue infn new_const
is not a problem when it's actually used for initializing statics which is the
most important use case.
Fixes #182