Merge features from abrombo's branch about galgebra

[eric-wieser]

@utensil, updated my comment above with a summary of every bullet point

[eric-wieser]

1. The new printer (do you wish to stop supporting Python 2.7?)

➡️ Let's track this in #39 .

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2. Odot (Have you noticed the discussion and my proposal of design which is less invasive?)

➡️ Let's track this in #19

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3. xtex (Have you noticed the xpdf function I modified to support not running pdflatex only generating .tex?)

❓ Not sure what action needs taking here.

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4. convert strings to raw strings to avoid escaping

✔️ Partially addressed in #342, but we should use them throughout the printer. Let's track this in #399.

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5. replace operators like I < > in print manually with their LaTeX correspondence (do you wish to stop support the automatic replacement?)

➡️ Let's track this in #400

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6. Lots of space or tab changes

✔️ Flake8 CI will ensure that none of this actually makes it in

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7. new examples/ipython/tutorial_algebra.ipynb

✔️ Handled by #375

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8. new examples/ipython/tutorial_calculus.ipynb

❓ This example seems to depend on a lot of code that was never committed, such as an implementation of Pdop.__add__ or Dop.lop() and Dop.rop(), neither of which have ever existed.

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9. your new collect adapter to solve the SymPy 1.4 compatibility issue

✔️ Solved already, I forget where.

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10. LaTeX changes such as align* to aligned

✔️ For align specifically, fixed in #382

❓ What to do about extra preamble?

[utensil]

1. your new collect adapter to solve the SymPy 1.4 compatibility issue

✔️ Solved already, I forget where.

Partially addressed by my #48 and fixed by your #344 , tracked by #31 and #49 .

[utensil]

1. xtex (Have you noticed the xpdf function I modified to support not running pdflatex only generating .tex?)

❓ Not sure what action needs taking here.

We could clean up the API of xpdf and introduce xtex as in this branch .

[utensil]

❓ What to do about extra preamble?

What extra preamble?

[eric-wieser]

We could clean up the API of xpdf and introduce xtex as in this branch .

I don't feel any strong urge to do that before 0.5.0. Fine to bump to 0.6.0?

What extra preamble?

abrombo's branch contains a bunch of extra latex preamble which is printed at the start of a jupyter notebook by Format() so that it can be used in print() and in markdown cells.

[utensil]

We could clean up the API of xpdf and introduce xtex as in this branch .

I don't feel any strong urge to do that before 0.5.0. Fine to bump to 0.6.0?

OK.

[utensil]

What extra preamble?

abrombo's branch contains a bunch of extra latex preamble which is printed at the start of a jupyter notebook by Format() so that it can be used in print() and in markdown cells.

Oh, I see. I didn't like the approach very much since it introduced a dependency on the preamble and makes the printed MathJax no longer free-standing. On the other hand, I do appreciate the fact that it makes the printer LaTeX more succinct and thus I'm not against this change but wishes to be able to opt-out but that's only a nice-to-have enhancement.