* change pibd stat display to show progress as a percentage of downloaded leaves
* attempt some inline rp validation
* propagate shutdown state through kernel validation
* change validation loop timing
* simplify validator threading
* add more detailed tracking of kernel history validation to tui, allow stop state during
* adding more stop state + tui progress indication
* remove progressive validate
* test fix
* investigations as to why a slight rewind is needed on startup during PIBD
* move validation code into desegmenter validation thread (for now)
* ensure genesis entries in pmmrs are removed if they're removed in the first segment
* validation all working except for verifying kernel sums
* remove unneeded pmmr rollbacks on resume now root cause was found
* updates to remove unpruned leaves from leaf set when rebuilding pmmr
* remove + 1 to segment traversal iter length
* update pibd copy test to use new desgmenter structure
* begin reconstruction of output pmmr
* clean up hash/leaf insertion logic
* push pruned subtree appears to be working, now also calculates left hand hashes correctly
* factor out ordering of segment/hash order array
* refactor for pmmr application code
* test of chain copy appears to be working
* add rangeproof functions to desegmenter
* add kernel functions, attempt refactor
* small test cleanup, reconstruction of live chain working in manual copy test
* add functions to desegmenter to report next desired segments, begin to add state to determine which segments have been requested
* add segmentidentifier type to id requested segments uniquely
* make a call on where to keep track of which PIBD segments have been requested
* move segmenttype definition, add functions to manipulate peer segment list
* remove desegmenter state enum
* change chain desegmenter function to provide rwlock
* trace, warning cleanup
* udpate to test compliation
* initial commit of WIP pibd explorations
* correct calling for obtaining and validating first segment
* update test to properly iterate through each segment of the test pmmrs, validating each segment as it goes
* updated test to fully segment and validate PMMRs from compacted and uncompacted sample data. Also contains method of running test againt live chain data
* remove logger change
* change test file name
* change test file name
* change directory reference in test for CI
* add initial (experimental) structure for PIBD desegmenting
* move bitmap desegmentation logic into desegmenter
* added txhashset methods to apply pibd segments (note this only works for fully unpruned trees atm)
* change last_pos to mmr_size
* fix to pmmr::peaks call
* don't verify POW when copying headers
* prepare for commit of work thus far'
* update test paths
* few updates based on early review
