use time/tzdata and time.LoadLocation in zygo/dates.go instead of 4d6… …3.com/tz which gives us build trouble
jsonmspg.go correct typo in error msg.
use 4d63.com/tz instead of standard time.LoadLocation which can be mi… …ssing
disallow .ls diagnostics in sandboxed mode
use # as the lazy formal argument marker, so $ can be spreadsheet cel… …l reference
fix broken if/else repl handling
better error on negative slice bound
allow variables in slicing bounds
restore repl .ls
label_infix with label not right before for