- Subsetting zero columns no longer returns wrong number of rows (#241, @echasnovski). - New `set_tidy_names()` and `tidy_names()`, a simpler version of `repair_names()` which works unchanged for now (#217). - New `rowid_to_column()` that adds a `rowid` column as first column and removes row names (#243, @barnettjacob). - The `all.equal.tbl_df()` method has been removed, calling `all.equal()` now forwards to `base::all.equal.data.frame()`. To compare tibbles ignoring row and column order, please use `dplyr::all_equal()` (#247). - Printing now uses `x` again instead of the Unicode multiplication sign, to avoid encoding issues (#216). - String values are now quoted when printing if they contain non-printable characters or quotes (#253). - The `print()`, `format()`, and `tbl_sum()` methods are now implemented for class `"tbl"` and not for `"tbl_df"`. This allows subclasses to use tibble's formatting facilities. The formatting of the header can be tweaked by implementing `tbl_sum()` for the subclass, which is expected to return a named character vector. The `print.tbl_df()` method is still implemented for compatibility with downstream packages, but only calls `NextMethod()`. - Own printing routine, not relying on `print.data.frame()` anymore. Now providing `format.tbl_df()` and full support for Unicode characters in names and data, also for `glimpse()` (#235). - Improve formatting of error messages (#223). - Using `rlang` instead of `lazyeval` (#225, @lionel-), and `rlang` functions (#244). - `tribble()` now handles values that have a class (#237, @NikNakk). - Minor efficiency gains by replacing `any(is.na())` with `anyNA()` (#229, @csgillespie). - The `microbenchmark` package is now used conditionally (#245). - `pkgdown` website.

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Use rlang functions #244

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