* Add method to convert values to ray or wad units
* Convert data to ray or wad for cat_file_chop_lump
* Use shared convert functions in price feed conversion
* Pull common ray/wad values into vars
* Fix after rebase with staging
* Deal integration test
* Add LogIndex to CatFileChopLump to update unique constraint
* Add LogIndex to cat_file_pit_vow records
* Add integration tests for Cat.file transformers
* Add log index to Cat.file flip