Upgrade to Webmention client 7.0.0

The Webmention and IndieWeb libraries have gone through some API churn,
and these changes are intended to accommodate that churn.

This should resolve issue #138.

jekyll-webmention_io.gemspec

@@ -44,7 +44,7 @@ EOF
   s.add_runtime_dependency "string_inflection", "~> 0.1"
   s.add_runtime_dependency "htmlbeautifier", "~> 1.1"
   s.add_runtime_dependency "uglifier", "~> 4.1"
-  s.add_runtime_dependency "webmention", "~> 0.1.6"
+  s.add_runtime_dependency "webmention", "~> 7.0"
 
   s.add_development_dependency "bundler", "~> 2.2"
   s.add_development_dependency "cucumber", "~> 3.1"

lib/jekyll/commands/webmention.rb

@@ -51,7 +51,7 @@ def self.process(_args = [], options = {})
                 next unless endpoint
 
                 # get the response
-                response = WebmentionIO.webmention(source, escaped, endpoint)
+                response = WebmentionIO.webmention(source, target)
                 next unless response
 
                 # capture JSON responses in case site wants to do anything with them

lib/jekyll/webmention_io.rb

@@ -16,6 +16,7 @@
 require "uri"
 require "openssl"
 require "string_inflection"
+require "indieweb/endpoints"
 require "webmention"
 
 module Jekyll
@@ -209,7 +210,7 @@ def self.get_date_from_string(text)
     def self.get_webmention_endpoint(uri)
       # log "info", "Looking for webmention endpoint at #{uri}"
       begin
-        endpoint = Webmention::Client.supports_webmention?(uri)
+        endpoint = IndieWeb::Endpoints.get(uri)[:webmention]
         unless endpoint
           log("info", "Could not find a webmention endpoint at #{uri}")
           uri_is_not_ok(uri)
@@ -222,16 +223,17 @@ def self.get_webmention_endpoint(uri)
       endpoint
     end
 
-    def self.webmention(source, target, endpoint)
+    def self.webmention(source, target)
       log "info", "Sending webmention of #{target} in #{source}"
       # return `curl -s -i -d \"source=#{source}&target=#{target}\" -o /dev/null #{endpoint}`
-      mention = Webmention::Client.send_mention(endpoint, source, target, true)
-      case mention.response
+      response = Webmention.send_webmention(source, target)
+
+      case response
       when Net::HTTPOK, Net::HTTPCreated, Net::HTTPAccepted
         log "info", "Webmention successful!"
-        mention.response.body
+        response.body
       else
-        log "info", mention.inspect
+        log "info", response.inspect
         log "info", "Webmention failed, but will remain queued for next time"
         false
       end