update changelog for v0.2.6
fix date
Adding a TemplateRepoProvider model and a single subclass for GitHub integration.  TemplateRepos now belong to a TemplateRepoProvider with the GithubTemplateRepoProvider being the default.  The user's GitHub api key is migrated from the User model to the registered GithubTemplateRepoProvider instance's TemplateRepoProviderCredentials.  And the UserSerializer has been updated to ensure backwards compatibility with the panamax-ui use of the API.
updating changelog
Merge branch 'feature/introduce-scm-model-80208778'
Bring in webmock and bandaid some failures.

There are a few specs failing under Webmock's default behavior of
disallowing any network requests in your specs. Those have been flagged
with a special (and probably temporary) metadata that allows the
requests to go through.
Default to no root in AM::Serializers.

Every serializer in the app explicitly removed its root element anyway.
Remove ruby- prefix from .ruby-version.
Merge pull request #237 from CenturyLinkLabs/chore/nuke-prefix

Remove ruby- prefix from .ruby-version.
Merge pull request #236 from CenturyLinkLabs/chore/no-root-by-default

Default to no root in AM::Serializers.
Merge pull request #234 from CenturyLinkLabs/chore/webmock

Bring in webmock and bandaid some failures.
Fixing specs which were trying to make net calls
Ignore crt files.
Write certificate on read instead of write.
[#81019816]