This PR includes the following:

- Added a check for `../` which would check to see if a file is in a
  _sub_ directory
- Wrote test for `is_colocated_asset_links`

This PR is similare to PR #1969

* Add completion subcommand

* Remove old completion scripts

* Move completion logic

Manual testing:

Existing test_site/config.toml

http://127.0.0.1:1111/posts/a-post-with-dates

====

--- a/test_site/config.toml
+++ b/test_site/config.toml
@@ -18,6 +18,7 @@ extra_syntaxes_and_themes = ["syntaxes", "highlight_themes"]

 [slugify]
 paths = "on"
+paths_keep_dates = true
 taxonomies = "on"
 anchors = "on"

http://127.0.0.1:1111/posts/2016-10-08-a-post-with-dates

====

--- a/test_site/config.toml
+++ b/test_site/config.toml
@@ -17,7 +17,8 @@ highlight_theme = "custom_gruvbox"
 extra_syntaxes_and_themes = ["syntaxes", "highlight_themes"]

 [slugify]
-paths = "on"
+paths = "off"
+paths_keep_dates = true
 taxonomies = "on"
 anchors = "on"

http://127.0.0.1:1111/posts/2016-10-08_a-post-with-dates

====

--- a/test_site/config.toml
+++ b/test_site/config.toml
@@ -17,7 +17,8 @@ highlight_theme = "custom_gruvbox"
 extra_syntaxes_and_themes = ["syntaxes", "highlight_themes"]

 [slugify]
-paths = "on"
+paths = "safe"
+paths_keep_dates = true
 taxonomies = "on"
 anchors = "on"

http://127.0.0.1:1111/posts/2016-10-08_a-post-with-dates

* Add new `get_taxonomy_term` global function

* Update per @Keats feedback to make `page_count` available all the time.

* Add flag to override prompt for existing dir

Added --force flag to build subcommand.

* Remove unnecessary 'force' check

* Remove prompt to overwrite directory on build cmd

Solves #1993

According to
https://docs.rs/image/0.24.3/image/enum.DynamicImage.html#method.write_to,
it assumes a buffered writer, so we should provide one.

Signed-off-by: Ana Hobden <[email protected]>

Co-authored-by: Newbyte <[email protected]>
Co-authored-by: n-tux-tmp <[email protected]>
Co-authored-by: n-tux-tmp <[email protected]>

…se url