Fixing {{err tag and predefined tags

Merge pull request #17 from spekary/rewrite

Fixing go error tag and root tag

Major Rewrite

This was a major rewrite with the following changes:

• defined fragments end with {{end fragName}} tags, rather than {{end}} tags
• {{else if ...}} is now {{elseif ...}}
• {{join }} tag will join items with a string
• The backup tag {{- has been removed
• Reorganized the lexer and parser to be easier to debug
• Added many more unit tests. Code coverage > 90%.
• The output is sent to an io.Writer called _w. This allows more flexible use of the templates, and the ability to wrap them with middleware

Windows Compatibility

Fixing windows compatibility issues. Adding windows to CI tests.

v0.9.1

Updating versions.
Changing coninuous integration testing to github actions.

Fixing html escaping and including file

Slight change to how {{:h works and added {{:! to escape without creating html newlines to be used with the html pre tag.

Requiring a parameter count for named blocks

If you are going to use parameters in a named block, you now must specify how many parameters you expect.

Fix to error output

Merge pull request #9 from spekary/error_reporting

Fixing string output

Rerelease

Merge pull request #8 from spekary/error_reporting

Proceed an goimports error

Fixing output on error

Allowing GOT to proceed even if goimports or gofmt produces errors.

Fixing relative path problem

Merge pull request #7 from spekary/relative_paths

Relative paths