CommonHTML fixes for digits, Jeem, and Haa

[shadinaif]

In CommonHTML enviroment: this is to fix the render for some scripts related to numbers and letters with (tatweel جـ هـ):

Test case 1

fix position for \frac operator
\frac{1}{2}+\frac{A}{B}+\frac{C}{E}
before:

after:

Test case 2

fix over-line position for numbers
\overline{A}\space\overline{B}\space\overline{0}\space\overline{1}\space\overline{2}
before:

after:

Test case 3:

fix over-line position for Jeem and Haa
\overline{A}\overline{B}\overline{C}\overline{D}\overline{E}\overline{F}
before:

after:

Test case 4:

fix bar position for Jeem and Haa
\bar{A}\bar{B}\bar{C}\bar{D}\bar{E}\bar{F}
before:

after:

Test case 5:

fix numbers position inside square root. Applied on Jeem and Haa too
\sqrt{12345678c}
before:

after:

Test Case 6 has been removed because it is not valid in Arabic. Users must use \transn to represent decimals. That will convert the dot to the Arabic decimal comma separator
Example: \transn{1.234}\\\overline{\transn{1.234}}

Test case 6:

fix text alignment for decimal numbers when used with \\
1.234\\\overline{1.234}
before:

Fixes #10

[shadinaif]

@OmarIthawi This PR is ready for your review :)

[OmarIthawi]

@shadinaif Please bump up the version (like we did in bc9ff76) to 2.1.0, to denote the major updates you've done.

I think all of the changes look good, but I need to double check on the Test Case 6 updates shortly.

[shadinaif]

Version bump is done @OmarIthawi .

Regarding Test Case 6, this is the fixing code 8704990#diff-0f0b9bfbcff9748d4ec0e7b8ebd1ebe0R43

[OmarIthawi]

Version bump is done @OmarIthawi .

Regarding Test Case 6, this is the fixing code 8704990#diff-0f0b9bfbcff9748d4ec0e7b8ebd1ebe0R43

Thanks @shadinaif, I've copied it to a new issue (#17). Will take a look soon.

[shadinaif]

@OmarIthawi Thank you for opening the new issue #17 . Indeed, the \transn should be retiring (carefully) 👍

I believe the PR is ready now for your final review

[OmarIthawi]

LGTM!