Napalm-iosxr

*This is a bugfix release*
-------------------------

Fixed get_fact - error on cisco virl xrv (104) via 143 thanks to mekisiel

*This is a bugfix release*
-------------------------

Fix issues with the `is_alive` method.

*This is a bugfix release*
-------------------------

get_bgp_config: Have prefix limit check for lower case AF: https://github.com/napalm-automation/napalm-iosxr/pull/136 thanks to loverend

*This is a bugfix release*
-------------------------

- Remove dangerous usage of `eval`: https://github.com/napalm-automation/napalm-iosxr/pull/132
- Native jinja templates fixes: https://github.com/napalm-automation/napalm-iosxr/pull/131 and https://github.com/napalm-automation/napalm-iosxr/pull/130 thanks to wasabi222

Require pyIOSXR >= 0.51 due to a typo bug

Packaging related fix: "Avoid installing the test/ directory & files as a package.": https://github.com/napalm-automation/napalm-iosxr/pull/126 thanks to he32