Fix ui.economy_prices
Some more unit fields
Add a job flag that makes it show up as On Break.
Update CSV
Unit appearance tissue styles added.
Merge branch 'master' of git://github.com/angavrilov/df-structures
Investigate connections between tissue style data in more detail.
Update CSV
Allow specifying the process id as an argument to start.sh.
Annotate fields and vectors related to the shared modifier id space.

The existence of this shared id space was guessed by Quietust.
Update CSV
Identify fields in some history events
Some info on site finder
Identified field in region_map_entry - it's for the site finder
Identify some flags for region_map_entry
Originally identified these in 40d
Identify other 2 feature vectors, plus add some extra stuff to map_block
Identify pet_info.unk1 - it's the item ID of a pet vermin
Make unit_acquaintance struct, identify the flags inside it
rename unknown item.flags to unk<bit_offset>