Feature request -- inline mutable version of bit vector

[rvnath]

I understand that the current version of bitset returns a new copy of bitset for every bit op. Isn't it costly, especially for large bitsets to get a new object? Can we have an inline version please...?

[infusion]

I changed this behavior with 3.0.0 and surprisingly, there is not the big difference as one would expect, since instantiation of a prototyped class is quite fast. I'm currently working on the class, making it even faster. When I finish my current work, I'll back port it to a "inline version" as a reference of performance benchmarks.

[infusion]

BitSet now is mutable.