`template` method deprecation warning

[spickermann]

When running the latest version of phlex-markdown with the latest version of phlex, then there is the following deprecation warning output:

⚠️ [DEPRECATION] Defining the `template` method on a Phlex component will not be supported in Phlex 2.0. Please rename the method to `view_template` instead.

Because phlex-markdown still uses the deprecated template method name at

phlex-markdown/lib/phlex/markdown.rb

Line 12 in ee1e276

def template

I am happy to open a PR to fix the issue but would need some guideline on how you would like to handle updating the method name and handling compatibility between the new version of phlex-markdown and different versions of phlex. Just change the dependency in phlex-markdown.gemspec to spec.add_dependency "phlex", ">= 1.10"?

[spickermann]

@joeldrapper I just noticed that there is already #7 which fixes this issue. Would it be possible to merge it and release a new version?