Add align support

[sebkur]

I added method public ASCIITable align(int column, Align align) that allows us to set the alignment of a column (by index) to Align.RIGHT. I also added a corresponding test.

This is the test example, with column 2 set to Align.RIGHT.

+=====+==============+=====================+
| ID  | Name         | Email               |
|=====|==============|=====================|
| 123 | Alfred Alan  |     aalan@gmail.com |
|-----|--------------|---------------------|
| 223 | Alison Smart |    asmart@gmail.com |
|-----|--------------|---------------------|
| 256 | Ben Bessel   |    benb@outlook.com |
|-----|--------------|---------------------|
| 374 | John Roberts | johnrob@company.com |
+=====+==============+=====================+

Note that I took care not to right-align the header. It's a personal preference, I think it looks better if it is not aligned to the right. Added the disambiguating boolean argument isHeader to appendRow() in order to do that. We could make that configurable, too.

Some notes

• Implementing Align.CENTER will be a bit more tricky. We either to deal with odd number of padding characters where we cannot pad with the same amount of whitespace on each side of the cell's content.
• I think it could also make sense to add variant align(String columnName, Align align) with column names as argument. Could also be tricky because we can't really assume column names are unique.

[MitchTalmadge]

Wow cool, very well done! Ignore the build error. Do you think it would be a good idea to change the name of the function from align to alignColumn so that later we could add an alignCell function for alignment of a single cell? I think that'd be a nice addition.

Thanks for the contribution!

[sebkur]

Yes, I think renaming to alignColumn makes sense. I'll update the PR

[sebkur]

I pushed a new version a few days ago in case you didn't notice (not sure if you receive a notification about new pushes to my branch)

[MitchTalmadge]

My apologies, I got caught up in work. It looks good!

[sebkur]

Would you make a new release or do you want to wait for more features?

[MitchTalmadge]

Deployed as version 1.4.0, thanks for reminding me!

[sebkur]

Thank you