New 2.0.0 Branch

• As reported by @danfoster and @legau Ansible-core 2.16 removed ansible.builtin.include from ansible-core and replaced it with ansible.builtin.include_tasks. Ansible cannot scope ansible.builtin.include to ignore older versions etc. so I upgraded this role to fully support ansible-core 2.16+
• Support for ansible-core 2.15 and below is now located in the 1.5.X-legacy branch
• All legacy modules/plugins declarations have been updated to the newer ansible.builtin module/plugin declarations making role compliant moving forward
• with_items declarations were replaced with the newer loop declarations
• Error handling was added on symbiotic role variables
• Uninstall was moved to another file and scoped to run before any install logic
• Installation tasks have been scoped to run when uninstall: false or clean_install: true
• clean_install variable and functionality were added to really remove stuck on grease (or someone messed up bad)
• Added a task related to the scenario where a LTS version is set explicitly with default: true.
• Updated README.md file with some fixes and formatting and references
• Change Log will now be in Release Notes

The 1.5.X branch of this role now only supports ansible-core 2.15 and below.
README.md was updated with some formatting
A task was introduced to handle the scenario where a LTS version was explicitly set as default with default: true, backport from the 2.0.X branch

NVM Version Updates
Addressed #41 connection=local as reported by @neutralalice

Administrative work with version mismatches
Removed travis.yaml file as I'll be moving to CircleCI eventually
Fixed some issues in the meta/main.yml file

#35 now deprecated warn: false
#36 default:true is not idempotent was fixed while testing #35
Internal variable names changes to group them under a common prefix
Default dash command check was missing
NVM Version bump

Updated Default NVM version to latest 0.38.0
Added some additional Ansible Galaxy Tags
Linted README.md file

This marks the base release (now this this role is getting a little bit of traction). It is also the last release without tests. The upcoming version sees a pretty significant divergence from this version

Updated documentation to fix missing become: true when using become_user: some-user as reported by @jfoliveira