add changelog
diff --git a/.gitignore b/.gitignore
index 62263ff..cb04721 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
generated/*
target
dependency-reduced-pom.xml
+.classpath
+.project
diff --git a/CHANGES.md b/CHANGES.md
new file mode 100644
index 0000000..e14b328
--- /dev/null
+++ b/CHANGES.md
@@ -0,0 +1,37 @@
+# Parquet #
+
+### Version 2.1.0 ###
+* ISSUE [84](https://github.com/Parquet/parquet-format/pull/84): Add metadata in the schema for storing decimals.
+* ISSUE [89](https://github.com/Parquet/parquet-format/pull/89): Added statistics to the data page header
+* ISSUE [86](https://github.com/Parquet/parquet-format/pull/86): Fix minor formatting, correct some wording under the "Error recovery" se...
+* ISSUE [82](https://github.com/Parquet/parquet-format/pull/82): exclude thrift source from jar
+* ISSUE [80](https://github.com/Parquet/parquet-format/pull/80): Upgrade maven-shade-plugin to 2.1 to compile with mvn 3.1.1
+
+### Version 2.0.0 ###
+* ISSUE [79](https://github.com/Parquet/parquet-format/pull/79): Reorganize encodings and add details
+* ISSUE [78](https://github.com/Parquet/parquet-format/pull/78): Added sorted flag to dictionary page headers.
+* ISSUE [77](https://github.com/Parquet/parquet-format/pull/77): fix plugin versions
+* ISSUE [75](https://github.com/Parquet/parquet-format/pull/75): refactor dictionary encoding
+* ISSUE [64](https://github.com/Parquet/parquet-format/pull/64): new data page and stats
+* ISSUE [74](https://github.com/Parquet/parquet-format/pull/74): deprecate and remove group_var_int encoding
+* ISSUE [76](https://github.com/Parquet/parquet-format/pull/76): add mention of boolean on RLE
+* ISSUE [73](https://github.com/Parquet/parquet-format/pull/73): reformat encodings
+* ISSUE [71](https://github.com/Parquet/parquet-format/pull/71): refactor documentation for 2.0 encodings
+* ISSUE [66](https://github.com/Parquet/parquet-format/pull/66): Block strings
+* ISSUE [67](https://github.com/Parquet/parquet-format/pull/67): Add ENUM ConvertedType
+* ISSUE [58](https://github.com/Parquet/parquet-format/pull/58): Correct unterminated comment for SortingColumn.
+* ISSUE [51](https://github.com/Parquet/parquet-format/pull/51): Add metadata to specify row groups are sorted.
+
+### Version 1.0.0 ###
+* ISSUE [46](https://github.com/Parquet/parquet-format/pull/46): Update readme to include 4 byte length in rle columns
+* ISSUE [47](https://github.com/Parquet/parquet-format/pull/47): fixed typo in readme.md
+* ISSUE [45](https://github.com/Parquet/parquet-format/pull/45): Typo in describing preferred row group size
+* ISSUE [43](https://github.com/Parquet/parquet-format/pull/43): add dictionary encoding details
+* ISSUE [41](https://github.com/Parquet/parquet-format/pull/41): Update readme with details about RLE encoding
+* ISSUE [39](https://github.com/Parquet/parquet-format/pull/39): Added created_by optional file metadata.
+* ISSUE [40](https://github.com/Parquet/parquet-format/pull/40): add details about the page size fields
+* ISSUE [35](https://github.com/Parquet/parquet-format/pull/35): this embeds and renames the thrift dependency in the jar, allowing people to use a different version of thrift in parallel
+* ISSUE [36](https://github.com/Parquet/parquet-format/pull/36): adding the encoding to the dictionary page
+* ISSUE [34](https://github.com/Parquet/parquet-format/pull/34): Corrected typo
+* ISSUE [32](https://github.com/Parquet/parquet-format/pull/32): Add layout diagram to README and fix typo
+* ISSUE [31](https://github.com/Parquet/parquet-format/pull/31): Restore encoding changes
diff --git a/changelog.sh b/changelog.sh
new file mode 100755
index 0000000..c144689
--- /dev/null
+++ b/changelog.sh
@@ -0,0 +1,45 @@
+GITHUB_REPO=Parquet/parquet-format
+OAUTH_FILE=~/.github_oauth_for_changelog
+if [ -f $OAUTH_FILE ]
+then
+ token=`cat $OAUTH_FILE`
+else
+ echo "Please create an oauth token here: https://github.com/settings/tokens/new"
+ echo "Then paste it bellow (it will be saved in $OAUTH_FILE):" >&2
+ read token >&2
+ echo $token > $OAUTH_FILE
+ chmod og-rwx $OAUTH_FILE
+fi
+TOKEN_HEADER="Authorization: token $token"
+
+curl -f -H "$TOKEN_HEADER" -s "https://api.github.com" > /dev/null
+if [ $? == 0 ]
+then
+ echo "login successful" >&2
+else
+ echo "login failed" >&2
+ curl -H "$TOKEN_HEADER" -s "https://api.github.com"
+ echo "if your OAUTH token needs to be replaced you can delete file $OAUTH_FILE"
+ exit 1
+fi
+
+echo "# Parquet #"
+
+git log | grep -E "Merge pull request|prepare release" | while read l
+do
+ release=`echo $l | grep "\[maven-release-plugin\] prepare release" | cut -d "-" -f 5`
+ PR=`echo $l| grep -E -o "Merge pull request #[^ ]*" | cut -d "#" -f 2`
+ if [ -n "$release" ]
+ then
+ echo
+ echo "### Version $release ###"
+ fi
+ if [ -n "$PR" ]
+ then
+ JSON=`curl -H "$TOKEN_HEADER" -s https://api.github.com/repos/${GITHUB_REPO}/pulls/$PR | tr "\n" " "`
+ DESC_RAW=$(echo $JSON | grep -Eo '"title":.*?[^\\]",' | cut -d "\"" -f 4- | head -n 1 | sed -e "s/\\\\//g")
+ DESC=$(echo ${DESC_RAW%\",})
+ echo "* ISSUE [$PR](https://github.com/${GITHUB_REPO}/pull/$PR): ${DESC}"
+ fi
+done
+
