chore: bump version to 0.1.8

Merge pull request #13 from djgoku/chore/revert-read-only

Revert setting `read-only-mode` for encrypted sops buffers

Merge pull request #11 from markflarup/read-only

Makes buffer read-only when sops-mode is active

Merge pull request #10 from djgoku/chore/updating-docs

Bumping version to 0.1.5 for documentation updates.

Merge pull request #7 from djgoku/fix/bump-version-to-0-1-3

Fix/bump version to 0.1.4

Merge pull request #6 from djgoku/fix/switch-to-version-less-than-for…

…-version-check

Switching to `version<` over `string-version-lessp` for `sops--version-check`.

Merge pull request #5 from akirak/tidy

Some tidying on the code

Merge pull request #4 from djgoku/3-feature-request-remove-hardcoded-…

…keybindings-in-info-messages

Look up keys for `sops-save-file` and `sops-cancel` to use in messaging

For now get `sops` package from github.