Namespace all fishhook functions, fix FLEXTool#408

I know not all of them needed to be namespaced as the private functions are static, but I did it anyway for consistency.

Bump version

Update README.md

Bump podspec version

Bump podspec version, add warning flag to podspec

Our podspec needs -Wno-unsupported-availability-guard for now

Marking this as `3.1` instead of `3.0.1` because we don't really have…

… much of an "API" to use for semantic versioning, but a lot changed under the hood so I think a minor version change is warranted.

- Drops support for iOS 8
- Initial support for iOS 13 and dark mode
- Allow passing addresses for `id` arguments
- Added a custom class hierarchy scope bar to the object/class explorer
   - This replaces the old scope bar which only had 2-4 options for viewing inherited metadata
- You can now search the globals screen
- Additions to the globals screen:
   - `NSProcessInfo.processInfo`
   - `UIPasteboard.generalPasteboard`
   - Explore bundle and container
   - Explore the keychain

- Various bug fixes
- Adopt `WKWebView`
- Migrate to `UIAlertController`
- Various file browser upgrades
   - Improved image detection
   - Show editor for readonly properties with setters
   - Show share sheet for folders and files
   - Share the actual file instead of the file path in the file browser
   - Adopt context menu on iOS 13
- By default, exploring user defaults from the globals screen will only show user defaults in the defaults file
   - This hides some useless defaults that appear in NSUserDefaults for all apps

Clean up FLEXObjcInternal.mm

Clean up FLEXObjcInternal.mm

Fix FLEXTool#140, system log messages work

more progress

Fix FLEXTool#168 by restructuring try-catch branching