Bump parser dep to 2.2.0.pre.5
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[Fix #1368] MultilineOperationIndentation's handling of RSpec code

Change what is regarded as the left hand side, or base
indentation, that the right hand side is compared against.

Typical RSpec code with expect ... to change ... from ... to
is a good complicated example. It's not self evident that
the indentation should be just this way. I've made a choice.
Merge pull request #1381 from jonas054/1360_fix_multiline_op

[Fix #1368] MultilineOperationIndentation's handling of RSpec code
Do not use the syck YAML engine

We started using the syck engine in some cases to
solve a roblem that
a) we can't reproduce now
b) we can solve in another way

This is the other solution. To have special logic
for empty YAML files.

The reason why we want to avoid syck is that it
gets into encoding problems with the configuration
of Style/WordArray, which contains a regular
expression.
Merge pull request #1385 from jonas054/fix_yaml_crash

Do not use the syck YAML engine
Extract shared examples

Much of the behavior of MultilineOperationIndentation
is the same for both enforced styles. Show this in
the specs.
Reduce the ClassLength/Max of MultilineOperationIndentation

Just a little bit to avoid being the worst.
Merge pull request #1386 from jonas054/fixup_multiline_op_ind

Small fixes for MultilineOperationIndentation
[Fix #1388] Discard method calls without arguments in FormatString
Small performance optimization
Kill a bit of whitespace
Kill some more whitespace
Show decimals for Metrics/AbcSize:Max if given in config

The reporting of the offense should include a decimal
if set like that in a configuration file.

And increase the number of significant digits reported
for the size. Otherwise we get output such as [44/44]
when the size is just above 44.

Allowing a little bit of duplication makes the specs
more readable than with the method registers_offense.
Make `--out` to create parent directories

Fix #1389.
Merge pull request #1391 from yous/patch-out-parent-directories

Make `--out` to create parent directories
Merge pull request #1392 from jonas054/fix_abc_size_decimal

Show decimals for Metrics/AbcSize:Max if given in config
[Fix #1181] New cop StringLiteralsInInterpolation
Extract common code into mixins
Merge pull request #1393 from jonas054/1181_quotes_in_interpolation

Check quotes in interpolation