**Changes: v33rc3**

- Major
  * Fix: IBD `30%` faster, and `60%` reduced data traffic #122 
  * Add: new option `-prunedebuglogfile`: limit filesize of debug.log #110  
  * Add: when IBD, print blockheader count on debug.log #128 
  * Update: checkpoints (mainnet) #132 
  * Fix: IBD optimizing #135 
  * Update: seed list #144 
  * Remove: BCLog::POW (-debug=pow) #142 

- Minor
  * GUI: display size in MB (was GB) #125 
  * Revert: IBD settings back to BTC original #124 
  * Add: bootstrap height at 4421701 #143 
  * Fix: travis pathlib2 #148

* add: option "-prunedebuglogfile": limit filesize of debug.log (#110)

The idea is `ShrinkDebugFile` in realtime.

- AIM:
to prevent disk is filling full up with log file.

- DEBUG:
If `debug.log` is over 10 MB (`10*1000*1000`), shrink to 1 MB (`1*1000*1000`). 10x smaller
  * `watch -n1 ls -lh debug.log`
  * `watch -n5 ps -p "$(cat sugarchaind.pid)" -o %cpu,%mem,cmd`

- RUN: 
check logging speed and filesize
  * `sugarchaind -prunedebuglogfile -reindex-chainstate`

- PERIOD:
a cycle took around `4:30` when `-reindex-chainstate`
```
2020-04-20 23:18:55 DEBUG.LOG PRUNED at 10000071
2020-04-20 23:24:33 DEBUG.LOG PRUNED at 10000014
2020-04-20 23:30:11 DEBUG.LOG PRUNED at 10000018
2020-04-20 23:35:45 DEBUG.LOG PRUNED at 10000186
```

* IBD: do not check PoW (Yespower) during downloading headers (#122)

* IBD: do not check PoW (Yespower) during downloading headers
However this means checking PoW during IBD is, not actually skipped, but still checking in another places. This makes IBD much faster.
* remove: debug printf
* adding comment by volbil

* revert: (#80) do not disconnect whitelisted peers during IBD (#124)

* GUI: do not display in GB, but in MB (#125)

* revert (#78) & fix: disabled more getheaders (#126)

* revert&fix: disabled more getheaders
* remove: printf

* IBD: Print blockheader count on debug.log (#128)

* revert: MINIMUM_CONNECT_TIME (#129)

https://github.com/bitcoin/bitcoin/blob/f56c00b2345cd2e392ade4733e2ca9cb9b0af623/src/net_processing.h#L36

* Revert "revert: MINIMUM_CONNECT_TIME (#129)" (#130)

This reverts commit e37dfec.

* update: checkpoint (#132)

* bump 0.16.3.31rc1 + manpage (#133)

**Changes: v0.16.3.31rc1**

- Major
  * Fix: IBD `30%` faster, and `60%` reduced data traffic #122 
  * Add: new option `-prunedebuglogfile`: limit filesize of debug.log #110  
  * Add: when IBD, print blockheader count on debug.log #128 
  * Update: checkpoints (mainnet) #132 

- Minor
  * GUI: display size in MB (was GB) #125 
  * Revert: IBD settings back to BTC original #124 #126

* IBD: max blocks in transit per peer (cached PoW) (#135)

* bump v0.16.3.32rc2 + manpage (#137)

**Changes: v0.16.3.32rc2**

- Major
  * Fix: IBD `30%` faster, and `60%` reduced data traffic #122 
  * Add: new option `-prunedebuglogfile`: limit filesize of debug.log #110  
  * Add: when IBD, print blockheader count on debug.log #128 
  * Update: checkpoints (mainnet) #132 
  * Fix: IBD optimizing #135 

- Minor
  * GUI: display size in MB (was GB) #125 
  * Revert: IBD settings back to BTC original #124 #126

* fix: daemon Killed on ARM during IBD (out-of-memory) (#140)

* Revert "revert (#78) & fix: disabled more getheaders (#126)"

This reverts commit 7c45e62.

* comment

* remove: BCLog::POW (-debug=pow) (#142)

* add: bootstrap height at 4421701 (#143)

* scripts: In linearize, search for next position of magic bytes rather than fail
bitcoin/bitcoin#16802

* add: bootstrap height at 4421701

* update: seeds 2020-05-19 KST (#144)

* fix: travis: pathlib2 (#148)

ImportError: No module named 'pathlib2'

* doc (#151)

* bump v0.16.3.33rc3 + manpage (#152)

**Changes: v33rc3**

- Major
  * Fix: IBD `30%` faster, and `60%` reduced data traffic #122 
  * Add: new option `-prunedebuglogfile`: limit filesize of debug.log #110  
  * Add: when IBD, print blockheader count on debug.log #128 
  * Update: checkpoints (mainnet) #132 
  * Fix: IBD optimizing #135 
  * Update: seed list #144 
  * Remove: BCLog::POW (-debug=pow) #142 

- Minor
  * GUI: display size in MB (was GB) #125 
  * Revert: IBD settings back to BTC original #124 
  * Add: bootstrap height at 4421701 #143 
  * Fix: travis pathlib2 #148

* update: blockchain size as 3GB (#153)

* cleanup (#154)

* comment
* seeds version checker

* doc: release note v34 starboy (#160)

* doc: release note: starboy
* fix: known issue

* bump: v0.16.3.34-starboy + manpage (#161)

**Changes: v34-starboy (same as v33)**

- Major
  * Fix: IBD `30%` faster, and `60%` reduced data traffic #122 
  * Add: new option `-prunedebuglogfile`: limit filesize of debug.log #110  
  * Add: when IBD, print blockheader count on debug.log #128 
  * Update: checkpoints (mainnet) #132 
  * Fix: IBD optimizing #135 
  * Update: seed list #144 
  * Remove: BCLog::POW (-debug=pow) #142 

- Minor
  * GUI: display size in MB (was GB) #125 
  * Revert: IBD settings back to BTC original #124 
  * Add: bootstrap height at 4421701 #143 
  * Fix: travis pathlib2 #148