Update CHANGELOG.md

Author: ipapi-co

CHANGELOG.md

@@ -1,5 +1,16 @@
 
 
+[1.0.4](https://github.com/ipapi-co/ipapi-python/releases/tag/1.0.4) (2020-Jul-26)
+
+- Breaking changes to API
+- Rename 'field' to 'output' and add support for output formats e.g. json/csv/xml/yaml
+- Add support for more fields i.e. 'ip', 'city', 'region', 'region_code', 'country', 'country_code', 
+  'country_code_iso3', 'country_capital', 'country_tld', 'country_name', 'continent_code', 
+  'in_eu', 'postal', 'latitude', 'longitude', 'timezone', 'utc_offset', 'country_calling_code', 
+  'currency', 'currency_name', 'languages', 'country_area', 'country_population', 'latlong', 
+  'asn', 'org'
+
+
 [0.5.2](https://github.com/ipapi-co/ipapi-python/releases/tag/0.5.2) (2017-Feb-15)
 
 - Fix install issues with Python 3