Towncrier fixes (#97)

fastlane/Fastfile

@@ -101,13 +101,8 @@ end
 
 private_lane :export_version_changes do |options|
   Dir.chdir("..") do
+    sh("sed -i '.tmp' 's/CHANGES.md/version_changes.md/g' towncrier.toml")
     Changelog.update_topmost_section(version: options[:version], additional_entries: {})
-    changelog = Changelog.extract_first_section
-
-    # Pushing them directly into the $GITHUB_ENV results in errors
-    # https://trstringer.com/github-actions-multiline-strings/
-    # String substitution and here documents failed too
-    sh("echo '#{changelog}' >> version_changes.md")
   end
 end
 

fastlane/changelog.rb

@@ -11,9 +11,7 @@ require "date"
 # Helper methods to handle updates of the Changelog file
 #
 module Changelog
-  CHANGES_SEPARATOR_REGEX = /^\#\#\ Changes/.freeze
-  FILE = "CHANGES.md"
-
+  
   # Update the topmost section of the changelog to put version+date in title + add entry for dependency updates
   #
   # @param [String] version The version that we are releasing to use in the new title of the first section
@@ -43,21 +41,4 @@ module Changelog
     system("towncrier", "build", "--version", "#{version}", "--yes")
   end
 
-  # Returns the first section of the Changelog, corresponding to the changes in the latest version
-  #
-  def self.extract_first_section
-    lines = []
-    File.open(FILE, "r") do |file|
-      section_index = 0
-      file.each_line do |line|
-        is_separator_line = (line.chomp =~ CHANGES_SEPARATOR_REGEX)
-        section_index += 1 if is_separator_line
-        break if section_index >= 2
-
-        lines.append(line) if section_index == 1
-      end
-    end
-    lines[0..-2].join # Remove last line (title of section 2)
-  end
-
 end