Changed the fractional digits to display 6 places

.travis.yml

@@ -1,12 +1,10 @@
 language: ruby
 
 rvm:
-  - 2.0.0
-  - 2.1.10
-  - 2.2.9
-  - 2.3.6
   - 2.4.3
-  - 2.5.0 # Performs deploys. Change condition below when changing this.
+  - 2.5.0 
+  - 2.6.0
+  - 2.7.0 # Performs deploys. Change condition below when changing this.
 
 script:
   - make check
@@ -17,6 +15,6 @@ deploy:
   provider: rubygems
   on:
     tags: true
-    condition: "$TRAVIS_RUBY_VERSION == 2.5.0"
+    condition: "$TRAVIS_RUBY_VERSION == 2.7.0"
   api_key:
     secure: Ceq6J4aBpsoqRfSiC7z+/J4moOXNjcPMFb2Bfm5qE51cIZzeyuOIOc6zhrad9tUgoX6uTRRxLxkybyu4wNYSluMA3IXW20CJyXZeJEHIaTYIDTWFAIYyerBJyMujJycSo7XueWb0faKBENrBQKx1K1tS0EiXpA2rMhdA6RM3DOY=

History.md

@@ -1,3 +1,9 @@
+2.3.0 / 2020-03-26
+==================
+
+  * [Improvement](https://github.com/segmentio/analytics-ruby/pull/225): Update timestamp for sub-millisecond reporting
+  * Update supported Ruby versions (2.4, 2.5, 2.6, 2.7), remove unsupported Ruby versions (2.0, 2.1, 2.2, 2.3)
+
 2.2.8 / 2020-02-10
 ==================
 

lib/segment/analytics/utils.rb

@@ -64,12 +64,8 @@ def datetime_in_iso8601(datetime)
         end
       end
 
-      def time_in_iso8601(time, fraction_digits = 3)
-        fraction = if fraction_digits > 0
-                     ('.%06i' % time.usec)[0, fraction_digits + 1]
-                   end
-
-        "#{time.strftime('%Y-%m-%dT%H:%M:%S')}#{fraction}#{formatted_offset(time, true, 'Z')}"
+      def time_in_iso8601(time)
+        "#{time.strftime('%Y-%m-%dT%H:%M:%S.%6N')}#{formatted_offset(time, true, 'Z')}"
       end
 
       def date_in_iso8601(date)

lib/segment/analytics/version.rb

@@ -1,5 +1,5 @@
 module Segment
   class Analytics
-    VERSION = '2.2.8.pre'
+    VERSION = '2.3.0'
   end
 end