From this version, xplr won't annoy the users to visit the upgrade guide
when there is no need.
Also, users will only get upgrade related notification when it is
there is one.
Also be less aggressive for version compatibility.
Use the following logic:
Knowing that we use `{major}.{minor}.{patch}` versioning,
- Major version mismatch are incompatible. Fail with error, suggesting to
visit the Upgrade Guide.
- Minor version updates and patch fixes are compatible. Suggest user to
update the config file version manually. Or visit the Upgrade Guide.
- However, if the config file has greater value for minor version
than the app, also fail with error. Suggesting the user to visit Upgrade
Guide. Though in this case, the user will be downgrading.
Ref: https://github.com/sayanarijit/xplr/issues/45
With this change, `xplr` will only raise version incompatibility error
if the major version changes. Minor version updates are assumed to be
backwards compatible.
If the major version is `v0`, the minor version will be considered as
the major version and the security/patch version will be considered as
minor version and the same logic will apply.
