Robotframework-lint

Issues closed
- Issue 37 - trailing whitespace on line
- Issue 54 - Fix the recursive option
Thanks to Bassam Khouri for the fix
- Issue 62 - Comments included in keyword settings
- Issue 63 - Multiple instances of RfLint will result in duplicate rules

New Rules
- TrailingWhitespace

Other Changes
- fixed some unicode issues
- tested with python 3.7.2

- fix for issue 30 - preserve table headings

- added `walk` method to RobotFile class, that somehow got
left out in the 0.6 version.

New rules
- TooFewTestSteps
- TooFewKeywordSteps

Issues closed
- Issue 24 - InvalidTable isn't catching everything
- Issue 25 - Rules to detect empty tests and keywords
- Issue 27 - add --describe option
- Issue 28 - --rulefile isn't working
- Issue 30 - When ResourceRule class has configure method, rflint says the rule is unknown.
- Issue 31 - A GeneralRule class rule is not passed an object with a type attribute

Other changes
- small improvements to the custom parser

New rules
- Configurable rules
- New General rules:
- LineTooLong
- FileTooLong
- TrailingBlankLines
- New testcase rules
- TooManySteps (provided by guykisel)
- TooManyTestCases (provided by guykisel)

Issues closed
- issue 22 - FileTooLong rule
- issue 19 - rules should accept arguments
- issue 5 - "bare" comments are not parsed properly

Other changes
- Rflint now distinguishes between resource files and test suites
by checking whether the file has a testcase table or not
- General rules now have access to the raw text of a file, so
they can do their own parsing if they want (issue 5)

New rules

- new Suite rules:
- PeriodInSuiteName
- InvalidTable

- new Testcase rules:
- PeriodInTestName

Issues closed:
- issue 1 - Add -A/--argumentfile
- issue 2 - Need verbose option for --list
- issue 3 - --list output includes unnecessary quotes
- issue 4 - Add ability to process directories
- issue 7 - Add "rflint" script for easier use
- issue 13 - non-breaking spaces in a test file
- issue 15 - only list files that have errors/warnings
- issue 20 - Add --rulefile option for loading rules by filename
- issue 21 - "file not found" should be printed for bad filenames

Other changes
- internally, a parsed file is now either an instance of rflint.SuiteFile
or rflint.ResourceFile, depending on whether the file has a testcase
table in it. Prior to this change, the object was always of class RobotFile.
Both of these classes are a subclass of rflint.RobotFile, so any old
code that depends on that should continue to work.

- All internal rule classes now have a "doc" attribute for
returning the docstring without leading whitespace on each line.