chore: make newSubmoduleBehavior and noSubmodules the default behavior

[billiegoose]

BREAKING CHANGE: The newSubmoduleBehavior parameter has been removed and is now the default and only behavior, because it is good. And the noSubmodules parameter has been removed and is also the default and only behavior. (This only affects you if you a) liked seeing the console warnings or b) were using statusMatrix to traverse submodules for some reason.)

[isomorphic-git-bot]

Thank you wmhilton! I auto-formatted the code using prettier-standard. 🤖

[karma-pr-reporter]

Test Results for 063a7f9:

Browser	Pass	Skip	Fail	Time	Disconnect?
Chrome 79.0.3945 (Windows 10 0.0.0)	360	1	0	2m:56s	false
Chrome Mobile 78.0.3904 (Android 0.0.0)	360	1	0	1m:39s	false
Firefox 72.0.0 (Ubuntu 0.0.0)	360	1	0	0m:42s	false
HeadlessChrome 0.0.0 (Linux 0.0.0)	360	1	0	0m:32s	false
Mobile Safari 13.0.0 (iOS 13.0.0)	360	1	0	2m:5s	false
Safari 13.0.3 (Mac OS X 10.15.1)	360	1	0	2m:6s	false

Longest running tests

• 6.613 secs - fetch fetch --prune from git-http-mock-server - Chrome
• 5.811 secs - fetch fetch --prune-tags from git-http-mock-server - Safari
• 5.467 secs - statusMatrix statusMatrix with filter - Chrome
• 5.455 secs - Hosting Providers GitHub push - Chrome
• 4.897 secs - walk can populate type, mode, oid, and content - Chrome
• 4.583 secs - status status - Chrome
• 4.579 secs - merge merge 'delete-first-half' and 'delete-second-half' (noUpdateBranch) - Chrome
• 4.567 secs - merge merge two branches that modified the same file (no conflict)' - Chrome
• 4.449 secs - fetch shallow fetch (from Github) - Mobile Safari
• 4.248 secs - Hosting Providers GitHub push - Safari
• 4.186 secs - statusMatrix statusMatrix - Chrome

[isomorphic-git-bot]

🎉 This PR is included in version 1.0.0-beta.23 🎉

The release is available on:

• npm package (@beta dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[isomorphic-git-bot]

🎉 This PR is included in version 1.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀