Added option to quote YAML 1.1 boolean strings

[LaXiS96]

This pull request addresses issue #737.
I added an optional parameter to SerializerBuilder.WithQuotingNecessaryStrings to opt into treating YAML 1.1 boolean strings like "Yes", "no", "ON", "Off" as special strings that need to be quoted. Specification is here.
I also refactored the special strings regex to be compiled once at the construction of TypeAssigningEventEmitter.

[perlpunk]

In my opinion such an option just for booleans doesn't make much sense. Not only booleans have changed between YAML 1.1 and 1.2, but also numbers. Have a look here for a compact comparison: https://perlpunk.github.io/yaml-test-schema/schemas.html
So you should take into account all the differences.

[LaXiS96]

Thank you @perlpunk, I have updated the code to hopefully include all YAML 1.1 scalar styles.

[EdwardCooke]

I’m going to review this in the next few days so we can get it moving through. In the meantime, you’ll need to rebase from master to fix the merge conflicts.

[LaXiS96]

I merged my fork with upstream, thank you for your time!

[EdwardCooke]

The build hit the random bug during build. Can you push up another commit so it attempts a build again?

[LaXiS96]

To be fair, I noticed all previous builds ended with the same ResolveVersion error, I haven't seen any build succeed.
Is there anything I can do on my side to ensure it builds?

[EdwardCooke]

Instead of using master as your branch, try using a different branch name. It may be getting confused about having 2 master branches.

[LaXiS96]

I renamed my main branch and had to open a new pull request (#767), which did build successfully.