0.19.0

Breaking changes:

• New format for defining standard sets of globals that can
  describe all allowed fields of each global.

New features and improvements:

• Luacheck can now detect mutations and accesses of specific fields
  within globals. Standard global definitions have been updated
  to provide precise lists of allowed fields. This also
  works through local aliases (e.g. local t = table; t.upsert()
  produces a warning, but local t = table; t.insert() does not).
• Default set of allowed globals is now equal to globals normally
  provided by version of Lua used to run Luacheck, instead of
  all globals set in the interpreter while it runs Luacheck.
• All options that operate on lists of global names can now use
  field names as well. E.g. --not-globals string.len undefines
  standard field string.len. Additionally, config options
  globals, new_globals, read_globals, new_read_globals
  can use a table-based format to define trees of allowed fields.
• Lines that are longer than some maximum length are now reported.
  Default limit is 120. Limit can be changed using max_line_length
  option.
• Warnings related to trailing whitespace in comments
  and inside string literals now use separate warning codes.
• Luacheck no longer reports a crash with a long traceback when
  interrupted, instead it simply exits with an error message.

Fixes:

• Fixes inconsistent indentation not being detected on lines
  with trailing whitespace.