Accessibility compliance

[smartm0use]

Hello, I use your calendar since it was a pull request on Semantic-UI repository. I have a request for you: can you make your addon compliant with accessibility standards (WCAG 2.0)?

AChecker returns the following errors:

Check 244: Data table with both row and column headers does not use scope to identify cells. Repair: Add scope attributes to header cells so they identify the cells that relate to the header.

Line 553, Column 237: <table class="ui celled center aligned unstackable table seven column day"><thead><tr><th colspan="7 ... Line 608, Column 153: <table class="ui celled center aligned unstackable table seven column day"><thead><tr><th colspan="7 ...

Check 245: Data table with more than one row/column of headers does not use id and headers attributes to identify cells. Repair: Add id and headers attributes to table cells so they identify the cells that relate to the headers.

Line 553, Column 237: <table class="ui celled center aligned unstackable table seven column day"><thead><tr><th colspan="7 ... Line 608, Column 153: <table class="ui celled center aligned unstackable table seven column day"><thead><tr><th colspan="7 ...

Thank you.

[smartm0use]

Hello, can you fix this?

[AaronHarris]

Pull requests are surely encouraged if it's only a few changes that need to be made!

[smartm0use]

I do not know what kind of changes to add to the source code to make it compliant.