Add cabal_sandbox_info function

Reports whether the current working directory is within a
sandbox. Useful to check before installing Cabal packages into the
global registry.
Fix URL to gi (gitignore) function

Previous URL doesn't seem to work because the host requires a www
prefix.
Merge pull request #2542 from puffnfresh/gitignore-plugin-url

Fix URL to gi (gitignore) function
Update gitignore.plugin.zsh

Fix URL to gi (gitignore) function in _gitignireio_get_command_list function
Fix remaining broken URL in gitignore function
Merge pull request #2541 from puffnfresh/cabal-sandboxes-info

Add cabal_sandbox_info function
Adieu l'ami.

 @jimweirich -- You will be missed.
Merge pull request #2544 from fduch2k/patch-1

Update gitignore.plugin.zsh
Merge pull request #2548 from puffnfresh/gitignore-plugin-url

Fix remaining broken URL in gitignore function
Add KFB theme
Modify installation to pull from my repo
Use my theme as default
Look for platform specific config files
Initial custom platform files