parse and run union, compile summarize
implement summarize
move values to a separate module
create sub for phys op to sql module
add sqlite + some basic automated tests
adjust parser/syntax to treat union and union all the same
add sql pretty printer
implement conversion from physops back to sql
zap not matching completely
add direct tests for phys ops using sqlite
renames for consistency
implement simple phys op concrete syntax + parser
improve the phys op tests slightly
rearrange modules
add cabal, tidy up
add some haddock, add phys op parsing tests to the test suite