Update EIP statuses

[lightclient]

I'm updating EIP statuses according to #2996. The mappings are as follows:

Draft => Draft
Last Call => Last Call
Accepted => Final
Final => Final
Superseded => Final
Abandoned => Withdrawn
Rejected => Withdrawn
Active => Living

[lightclient]

cc: @axic @MicahZoltu @Souptacular

[MicahZoltu]

Going to merge this since we have already discussed it at length and I suspect (based on history) no one else will comment. It touches fairly few files, so if we decide we want to rollback later we can pretty easily.

[MicahZoltu]

Oops, just after clicking merge I realized that Accepted => Review is what it should have been. I'll get that fixed.

[edsonayllon]

Are we not using Stagnant anymore? Because Abandoned would be Stagnant.

[MicahZoltu]

I believe we only had Abandoned previously, and I believe that previous to now we have never marked an EIP as Abandoned except when the author requested/supported it. Would probably be valuable to go through and check the PRs that changed each of these to Abandoned and verify that is the case though.

[MicahZoltu]

I just verified all of them were moved to Abandoned by the author, so I believe Withdrawn is correct here.

[lightclient]

I guess my understanding if ProgPow's status was that it was fully specified and ready to be included in a hard fork if it were decided by the core developers necessary. In which case, I believe the appropriate status is Final.

[MicahZoltu]

I'm really hesitant to automatically move anyone's EIP into Final without their consent, since they lose the ability to make normative changes at that point.

[edsonayllon]

Yeah, I think Review is more appropriate for now, unless Greg wants ProgPoW in Final.