Documentation and interfaces for serialization to RSA*Numbers representations.
change names of key -> numbers interfaces
change to sub-interface idea
Added OPENSSL_config declaration
modified changelog
Fixed up a few issues
Merge pull request #1120 from alex/pr/1119

Add two new bindings
Fixed a few typos
Merge pull request #1122 from alex/typo-fixesg

Fixed a few typos
Merge pull request #1115 from reaperhulk/rsa-numbers-serialization

RSA Keys -> Numbers Interface
move some shared logic to functions
indent the proper amount
Add link about installation depdencies
don't do value checks in the numbers
Fixed typo
Fix other typo and use doc link instead
Merge pull request #1125 from reaperhulk/rsa-numbers-with-functions

Move some shared logic to functions
backend specific RSA*Key implementation for OpenSSL
remove skip in serialization tests until we have a backend that needs it
get numbers from loaded keys in numbers test