Warnings on compile

[mgwidmann]

Fix these:

==> gherkin
Compiling 8 files (.ex)
warning: String.rstrip/1 is deprecated, use String.trim_trailing/1
  lib/gherkin/parser/helpers/feature.ex:22

warning: String.strip/1 is deprecated, use String.trim/1
  lib/gherkin/parser/helpers/feature.ex:26

warning: String.strip/1 is deprecated, use String.trim/1
  lib/gherkin/parser/helpers/tables.ex:49

warning: String.lstrip/1 is deprecated, use String.trim_leading/1
  lib/gherkin/parser.ex:31

warning: String.lstrip/1 is deprecated, use String.trim_leading/1
  lib/gherkin/parser.ex:37

warning: String.lstrip/1 is deprecated, use String.trim_leading/1
  lib/gherkin/parser.ex:45

warning: String.strip/1 is deprecated, use String.trim/1
  lib/gherkin/parser/generic_line.ex:102

Generated gherkin app

[secondspass]

I can give this a go!

[secondspass]

Looks like you've already fixed it though