Description

Alias Crypt::OpenSSL::X509::Extension::to_string to Crypt::OpenSSL::X509::Extension::as_string

Fixes #66

Type of change

Please delete options that are not relevant.

[x ] My code follows the style guidelines of this project
[x] I have performed a self-review of my own code
[x] I have commented my code, particularly in hard-to-understand areas
[x] I have made corresponding changes to the documentation
[x] My changes generate no new warnings
[x] I have added tests that prove my fix is effective or that my feature works
[x] New and existing unit tests pass locally with my changes
[x] Any dependent changes have been merged and published in downstream modules
[x] Changes have been manually tested (please provide information on test platform using the fields below)