Update bips.md for 0.18.0 #15763

1. 
   sipa commented at 3:38 PM on April 6, 2019: member

   Update doc/bips.md for changes in 0.17 and 0.18 (BIP 61 deprecated, BIP 70 support optional, BIP 159 connection logic).

2. Update bips.md for 0.18.0 65d2f5d2de
3. sipa added this to the milestone 0.18.0 on Apr 6, 2019
4. sipa added the label Docs on Apr 6, 2019
5. 
   MarcoFalke commented at 4:16 PM on April 6, 2019: member

   ACK 65d2f5d2de37fd64c9cf8d526bab0072774b7b1d

6. MarcoFalke added the label Needs backport on Apr 6, 2019
7. 
   fanquake commented at 1:08 AM on April 7, 2019: member

   utACK 65d2f5d

8. 
   promag commented at 3:59 PM on April 7, 2019: member

   ACK 65d2f5d, referenced pulls match.

9. MarcoFalke merged this on Apr 8, 2019
10. MarcoFalke closed this on Apr 8, 2019

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11. MarcoFalke referenced this in commit a238fccce8 on Apr 8, 2019
12. fanquake referenced this in commit 538fef6625 on Apr 9, 2019
13. fanquake removed the label Needs backport on Apr 9, 2019
14. 
    fanquake commented at 11:23 AM on April 9, 2019: member

    Backported in #15775.

15. HashUnlimited referenced this in commit 59d0be4833 on Apr 19, 2019
16. vijaydasmp referenced this in commit d3bb70ebc9 on Nov 12, 2021
17. vijaydasmp referenced this in commit b920b0cb9c on Nov 16, 2021
18. vijaydasmp referenced this in commit 6e013e7801 on Nov 17, 2021
19. vijaydasmp referenced this in commit f3784b6703 on Nov 21, 2021
20. vijaydasmp referenced this in commit 73e1664fe1 on Nov 21, 2021
21. vijaydasmp referenced this in commit 267482876a on Nov 25, 2021
22. DrahtBot locked this on Dec 16, 2021

Milestone
0.18.0