Test against WordPress 5.5

[jeffpaul]

Is your enhancement related to a problem? Please describe.
Once WordPress 5.5 is released, we'll want to test Eight Day Week to see if any incompatibility issues arise.

Describe the solution you'd like

• test Eight Day Week on WordPress 5.5
• open issues for any incompatibilities noted in testing
• resolve issues identified in testing
• bump "tested up to" version
• if code changes needed due to incompatibilities, ship a plugin release, otherwise use "Plugin asset/readme update" action to update "tested up to" version on .org repo

Designs
n/a

Describe alternatives you've considered
none

Additional context
none

[jeffpaul]

In testing against 5.5.1 I ran into the following issue (which I tested in 5.4 and was unable to replicate).

• issue creating Sections within Print Issues, name entered for Section does not save and Template is used by default instead

[dinhtungdu]

@jeffpaul I can confirm the issue above. Template is used for the section title. But after updating the issue, the title is displayed correctly.

[jeffpaul]

Closed by #62.