docs: prepare changelog for 42.2.3 release

CHANGELOG.md

@@ -7,6 +7,20 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 ### Changed
 - Reduce the severity of the erorr log messages when an exception is re-thrown. The error will be 
 thrown to caller to be dealt with so no need to log at this verbosity by pgjdbc  [PR 1187](https://github.com/pgjdbc/pgjdbc/pull/1187)
+- Deprecate Fastpath API [PR 903](https://github.com/pgjdbc/pgjdbc/pull/903)
+- Support parenthesis in {oj ...} JDBC escape syntax [PR 1204](https://github.com/pgjdbc/pgjdbc/pull/1204)
+- ubenchmark module moved pgjdbc/benchmarks repository due to licensing issues [PR 1215](https://github.com/pgjdbc/pgjdbc/pull/1215)
+- Include section on how to submit a bug report in CONTRIBUTING.md [PR 951](https://github.com/pgjdbc/pgjdbc/pull/951)
+
+### Fixed
+- getString for PGObject-based types returned "null" string instead of null [PR 1154](https://github.com/pgjdbc/pgjdbc/pull/1154)
+- Field metadata cache can be disabled via databaseMetadataCacheFields=0 [PR 1052](https://github.com/pgjdbc/pgjdbc/pull/1152)
+- Properly encode special symbols in passwords in BaseDataSource [PR 1201](https://github.com/pgjdbc/pgjdbc/pull/1201)
+- Adjust date, hour, minute, second when rounding nanosecond part of a timestamp [PR 1212](https://github.com/pgjdbc/pgjdbc/pull/1212)
+- perf: reduce memory allocations in query cache [PR 1227](https://github.com/pgjdbc/pgjdbc/pull/1227)
+- perf: reduce memory allocations in SQL parser [PR 1230](https://github.com/pgjdbc/pgjdbc/pull/1230), [PR 1233](https://github.com/pgjdbc/pgjdbc/pull/1233)
+- Encode URL parameters in BaseDataSource [PR 1201](https://github.com/pgjdbc/pgjdbc/pull/1201)
+- Improve JavaDoc formatting [PR 1236](https://github.com/pgjdbc/pgjdbc/pull/1236)
 
 ## [42.2.2] (2018-03-15)
 ### Added
@@ -20,7 +34,6 @@ thrown to caller to be dealt with so no need to log at this verbosity by pgjdbc
 - Wrong results when single statement is used with different bind types[PR 1137](https://github.com/pgjdbc/pgjdbc/pull/1137)
 - Support generated keys for WITH queries that miss RETURNING [PR 1138](https://github.com/pgjdbc/pgjdbc/pull/1138)
 - Support generated keys when INSERT/UPDATE/DELETE keyword is followed by a comment [PR 1138](https://github.com/pgjdbc/pgjdbc/pull/1138)
-- Properly encode special symbols in passwords in BaseDataSource [PR 1201](https://github.com/pgjdbc/pgjdbc/pull/1201)
 
 ## [42.2.1] (2018-01-25)
 ### Known issues
@@ -56,6 +69,7 @@ thrown to caller to be dealt with so no need to log at this verbosity by pgjdbc
 - Use 'time with timezone' and 'timestamp with timezone' as is and ignore the user provided Calendars, 'time' and 'timestamp' work as earlier except "00:00:00" now maps to 1970-01-01 and "24:00:00" uses the system provided Calendar ignoring the user-provided one [PR 1053](https://github.com/pgjdbc/pgjdbc/pull/1053)
 - Change behaviour of multihost connection. The new behaviour is to try all secondaries first before trying the master [PR 844](https://github.com/pgjdbc/pgjdbc/pull/844).
 - Avoid reflective access to TimeZone.defaultTimeZone in Java 9+ [PR 1002](https://github.com/pgjdbc/pgjdbc/pull/1002) fixes [Issue 986](https://github.com/pgjdbc/pgjdbc/issues/986)
+
 ### Fixed
 - Make warnings available as soon as they are received from the server. This is useful for long running queries, where it can be beneficial to know about a warning before the query completes. [PR 857](https://github.com/pgjdbc/pgjdbc/pull/857)
 - Use 00:00:00 and 24:00:00 for LocalTime.MIN/MAX. [PR 992](https://github.com/pgjdbc/pgjdbc/pull/992)