Version bump

usage/base64.md

@@ -0,0 +1,88 @@
+# Base64
+
+Encode and decode to and from Base64.
+
+Base64 assumes [RFC4648](https://rfc-editor.org/rfc/rfc4648.html) encoding. Encoding and decoding both assume that the content is a UTF-8 string and not binary content.
+
+
+See below for examples
+
+
+## Decode base64: simple
+Decoded data is assumed to be a string.
+
+Given a sample.txt file of:
+```
+YSBzcGVjaWFsIHN0cmluZw==
+```
+then
+```bash
+yq -p=base64 -oy '.' sample.txt
+```
+will output
+```yaml
+a special string
+```
+
+## Decode base64: UTF-8
+Base64 decoding supports UTF-8 encoded strings.
+
+Given a sample.txt file of:
+```
+V29ya3Mgd2l0aCBVVEYtMTYg8J+Yig==
+```
+then
+```bash
+yq -p=base64 -oy '.' sample.txt
+```
+will output
+```yaml
+Works with UTF-16 😊
+```
+
+## Decode with extra spaces
+Extra leading/trailing whitespace is stripped
+
+Given a sample.txt file of:
+```
+
+ YSBzcGVjaWFsIHN0cmluZw==  
+
+```
+then
+```bash
+yq -p=base64 -oy '.' sample.txt
+```
+will output
+```yaml
+a special string
+```
+
+## Encode base64: string
+Given a sample.yml file of:
+```yaml
+"a special string"
+```
+then
+```bash
+yq -o=base64 '.' sample.yml
+```
+will output
+```
+YSBzcGVjaWFsIHN0cmluZw==```
+
+## Encode base64: string from document
+Extract a string field and encode it to base64.
+
+Given a sample.yml file of:
+```yaml
+coolData: "a special string"
+```
+then
+```bash
+yq -o=base64 '.coolData' sample.yml
+```
+will output
+```
+YSBzcGVjaWFsIHN0cmluZw==```
+

usage/shellvariables.md

@@ -84,3 +84,23 @@ will output
 name='Miles O'"'"'Brien'
 ```
 
+## Encode shell variables: custom separator
+Use --shell-key-separator to specify a custom separator between keys. This is useful when the original keys contain underscores.
+
+Given a sample.yml file of:
+```yaml
+my_app:
+  db_config:
+    host: localhost
+    port: 5432
+```
+then
+```bash
+yq -o=shell --shell-key-separator="__" sample.yml
+```
+will output
+```sh
+my_app__db_config__host=localhost
+my_app__db_config__port=5432
+```
+