Fixed bug with dynamic nullable missing values
I can't work out when this was introduced. However all unit tests in the Dynamic project now pass.
Added in support for boolean values in Dynamic Yaml
Also added unit test
Merge pull request #92 from antmt/dyanmic-missing-value-bug

Fixed bug with dynamic nullable missing values
Merge pull request #93 from antmt/dynamic-bool-support

Added in support for boolean values in Dynamic Yaml