* 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
* 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
* remove +1 from segment count
* prediction comment change
* add ignore of full-chain test
