simpler, lighter, stronger

summary

• The bracket and colon syntax has been deprecated in favor of a lighter syntax.
  Documentation has been updated accordingly, see docs for more
  information about the new syntax. Using the old syntax will raise a warning
  and will be removed in future versions of zeallot. Thank you to @hadley for
  the suggestion. (#21)
• %<-% can now be used for regular assignment. (#17)
• ... can now be used to skip multiple values without assigning those values
  and is now recommended over the previously suggested ..... (#18)
• massign() is no longer exported.

syntax

• c(a, b) %<-% c(0, 1)
• c(a, b) %<-% list(0, 1)
• c(a, c(b, d)) %<-% list(0, list(1, 2))
• c(a, c(b, d)) %<-% data.frame(x = 1:5, y = 6:10, z = 11:15)

bug fixes

• Numerics on left-hand side are no longer unintentionally quoted and will now
  raise an error. (#20)
• Language objects on left-hand side are no longer treated as symbols and will
  now raise an error. (#20)