Reverse solution from GH-64

1. Deleted the custom `git-diff-igloocrypt` script
2. Removed the custom `[diff "igloocrypt"]` section from the
   `gitconfig` file
3. Removed the custom filter "igloocrypt" from the `gitconfig` file
4. Updated the `filter` and `diff` custom global Git attributes handler
   for all `*.igloocrypt` files to the new `git-crypt` setup

GH-113

snowblocks/git/gitattributes

@@ -10,5 +10,7 @@
 #   https://www.gnupg.org
 #   https://wiki.archlinux.org/index.php/GnuPG
 
-*.igloocrypt filter=igloocrypt diff=igloocrypt
+*.igloocrypt filter=git-crypt diff=git-crypt
 .gitattributes !filter !diff
+.gitignore !filter !diff
+.gitmodules !filter !diff

snowblocks/git/gitconfig

@@ -54,9 +54,6 @@
   tool = intellij
   compactionHeuristic = true
 
-[diff "igloocrypt"]
-  textconv = "~/.git-diff-igloocrypt"
-
 [difftool "intellij"]
   prompt = true
   cmd = idea diff $(cd $(dirname "$LOCAL") && pwd)/$(basename "$LOCAL") $(cd $(dirname "$REMOTE") && pwd)/$(basename "$REMOTE")
@@ -70,10 +67,6 @@
 [interactive]
   diffFilter = diff-so-fancy
 
-[filter "igloocrypt"]
-  clean = "gpg --encrypt --recipient 60C54F1519346085"
-  smudge = "gpg --decrypt"
-
 [merge]
   tool = intellij
   ff = false

snowblocks/git/snowblock.json

@@ -11,7 +11,6 @@
         }
       },
       "~/.git-commit-msg": null,
-      "~/.git-diff-igloocrypt": null,
       "~/.gitconfig": null,
       "~/.gitconfig_auth": {
         "hosts": {