Sugarchain Yumekawa v0.16.3.23rc1

Recommendation:

1. First sync and download speeds are at least 2x upto 32x faster.
2. Enhanced chain security.

Reminder:
Currently Yumekawa 32-bit version (include ARM) is too slow, due to lack of Yespower SSE2 support. We strongly recommend using 64-bit version for best performance.

Changes:

[x] fix: Timeout downloading block
[x] add: checkpointData | chainTxData
[x] add: seed list from dnsseed
[x] fix: boost warnings on OSX by @volbil
[x] review: README.md by @Nugetzrul3
[x] fix: bootstrap height 650000

Credits:
Thanks to everyone who directly contributed to this release (alphabetical order)

AestheticSenpai
cryptozeny
ilmango-doge
joeland1
metastream
nao20010128nao
Nugetzrul3
okoto-xyz
RicK~Z
solardiz
volbil
y-chan
zawy12

Fingerprint:

BB27 9FE1 59A0 E40E D02B  3365 B9DD BDE2 AAAD C421
cryptozeny (sugarchain developer) <[email protected]>

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