Add 'since version' to docs for clarity

Signed-off-by: Khosrow Moossavi <khos2ow@gmail.com>

docs/user-guide/configuration.md

@@ -39,6 +39,8 @@ $ terraform-docs -c .tfdocs-config.yml .
 
 ## Options
 
+Since `v0.10.0`
+
 Below is a complete list of options that you can use with `terraform-docs`, with their
 corresponding default values (if applicable).
 
@@ -119,6 +121,8 @@ Valid operators are as follow:
 
 ## Formatters
 
+Since `v0.10.0`
+
 The following options are supported out of the box by terraform-docs and can be
 used for `FORMATTER_NAME`:
 
@@ -142,30 +146,39 @@ formatter name must be set to `foo`.
 
 ## header-from
 
+Since `v0.10.0`
+
 Relative path to a file to extract header for the generated output from. Supported
 file formats are `.adoc`, `.md`, `.tf`, and `.txt`. Default value is `main.tf`.
 
 ## footer-from
 
+Since `v0.12.0`
+
 Relative path to a file to extract footer for the generated output from. Supported
 file formats are `.adoc`, `.md`, `.tf`, and `.txt`. Default value is `""`.
 
 ## Sections
 
+Since `v0.10.0`
+
 The following options are supported and can be used for `sections.show` and
 `sections.hide`:
 
-- `data-sources`
+- `data-sources` (since `v0.13.0`)
 - `header`
+- `footer` (since `v0.12.0`)
 - `inputs`
-- `modules`
+- `modules` (since `v0.11.0`)
 - `outputs`
 - `providers`
 - `requirements`
-- `resources`
+- `resources` (since `v0.11.0`)
 
 ## Output
 
+Since `v0.12.0`
+
 Insert generated output to file if `output.file` (or `--output-file string` CLI
 flag) is not empty. Insersion behavior can be controlled by `output.mode` (or
 `--output-mode string` CLI flag):
@@ -263,6 +276,8 @@ Markdown engine to properly process the comment line after the paragraph.
 
 ## Sort
 
+Since `v0.10.0`
+
 To enable sorting of elements `sort.enabled` (or `--sort bool` CLI flag) can be
 used. This will indicate sorting is enabled or not, but consecutively type of
 sorting can also be specified with `sort.by` (or `--sort-by string` CLI flag).

docs/user-guide/how-to.md

@@ -20,6 +20,8 @@ Error: accepts 1 arg(s), received 2
 
 ## Visibility of Sections
 
+Since `v0.10.0`
+
 Output generated by `terraform-docs` consists of different [sections] which are
 visible by default. The visibility of these can be controlled by one of the following
 options:
@@ -68,6 +70,8 @@ $ terraform-docs --hide inputs --hide providers .
 
 ## Module Header
 
+Since `v0.10.0`
+
 Module header can be extracted from different sources. Default file to extract
 header from is `main.tf`, otherwise you can specify the file with `--header-from FILE`
 or corresponding `header-from` in configuration file. Supported file formats to
@@ -106,23 +110,29 @@ formatting to them (i.e. adding `<SPACE><SPACE>` at the end of lines for break,
 
 ## Module Footer
 
+Since `v0.12.0`
+
 Extracting module footer works exactly like header with one exception. There is no
 default file to attempt extraction from, you need to explicitly specify desired file
 to extract content from with `--footer-from FILE` or corresponding `footer-from` in
 configuration file.
 
 ## Insert Output To File
 
-Since `v0.12.0`, generated output can be insterted directly into the file. There
-are two modes of insersion: `inject` (default) or `replace`. Take a look at [output]
-configuration for all the details.
+Since `v0.12.0`
+
+Generated output can be insterted directly into the file. There are two modes of
+insersion: `inject` (default) or `replace`. Take a look at [output] configuration
+for all the details.
 
 ```console
 terraform-docs markdown table --output-file README.md --output-mode inject /path/to/module
 ```
 
 ## Generate terraform.tfvars
 
+Since `v0.9.0`
+
 You can generate `terraform.tfvars` in both `hcl` and `json` format by executing
 the following, respectively:
 
@@ -167,6 +177,8 @@ examples.
 
 ## Pre-commit Hook
 
+Since `v0.12.0`
+
 With [`pre-commit`], you can ensure your Terraform module documentation is kept
 up-to-date each time you make a commit.