diff --git a/.rubocop.yml b/.rubocop.yml
index e941f59..5d29a7a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -10,6 +10,7 @@ AllCops:
     - 'spec/**/*'
     - 'vendor/**/*'
     - 'tmp/*'
+    - '*.gemspec'
   DisplayCopNames: true
 
 Metrics/LineLength:
@@ -39,7 +40,7 @@ Style/PercentLiteralDelimiters:
     "%i": "[]"
 
 Metrics/ClassLength:
-  Max: 260
+  Max: 300
 
 Metrics/CyclomaticComplexity:
   Max: 7
diff --git a/.travis.yml b/.travis.yml
index 7dd9227..7e34f23 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,8 @@ rvm:
   - "2.1"
   - "2.2"
   - "2.3.0"
+  - "2.4.0"
+  - "2.5.0"
   - jruby-9.0.5.0
   - rbx-2
 matrix:
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..bd51013
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Geo::Coord changelog
+
+## 0.1.0 - Feb 3, 2018
+
+* Switch to `BigDecimal` for internal values storage;
+* More friendly `#inspect` & `#to_s` format;
+* Rename `#to_a` to `#latlng` & `#lnglat`;
+* Fix `#lats` formula bug.
+
+## 0.0.1 - Jun 06, 2016
+
+Initial release as a gem.
diff --git a/lib/geo/coord/version.rb b/lib/geo/coord/version.rb
index 9636492..c076325 100644
--- a/lib/geo/coord/version.rb
+++ b/lib/geo/coord/version.rb
@@ -1,5 +1,5 @@
 module Geo
   class Coord
-    VERSION = '0.0.1'.freeze
+    VERSION = '0.1.0'.freeze
   end
 end