Upgrade to pynac-0.6.4

[rwst]

Newest pynac does:

• fix Re/Im(tanh) (doctest fix for: Re/Im(tanh) wrong formula #20098) (R. Stephan)
• fix positive+integer assumption conflicts (add symbolic domains posint, cinteger, crational #20132) (A. Thakkar)
• from GiNaC: [bugfix] fix elusive bug in quo, rem,... (R. Kreckel)
• from GiNaC: [bugfix] fix sqrfree(poly) for zero polynomials in disguise. (R. Kreckel)
• sin/cos/tan of numeric: reduce mod 2*pi (test improved evaluation of trigonometric functions and complex exponential function #20099) (B. Hackl)
• more trigonometric simplifications (test improved evaluation of trigonometric functions and complex exponential function #20099) (B. Hackl, R. Stephan)
• always expand function arguments (B. Hackl)
• exp of numeric: reduce mod 2*pi*I (test improved evaluation of trigonometric functions and complex exponential function #20099) (B. Hackl)
• performance: speed up sin/cos/tan/coth/acoth evaluation (R. Stephan, A. Thakkar)
• performance: GiNaC functions for coth/sech/csch/acoth/asech/acsch (R. Stephan, A. Thakkar)
• AUTHORS updated

https://github.com/pynac/pynac/releases/download/pynac-0.6.4/pynac-0.6.4.tar.bz2

Component: packages: standard

Author: Ralf Stephan

Branch/Commit: 9cbedc7

Reviewer: Jeroen Demeyer

Issue created by migration from https://trac.sagemath.org/ticket/20134

[rwst]

Branch: u/rws/upgrade_to_pynac_0_6_3

[rwst]

Commit: 2fab819

[rwst]

Description changed:

--- 
+++ 
@@ -1,7 +1,7 @@
 Newest pynac does:
-* fix `Re/Im(tanh)` (#20098)
-* sin/cos/tan of numeric: reduce mod `2*pi` (#20099)
-* exp of numeric: reduce mod `2*pi*I` (#20099)
-* performance: speed up sin/cos/tan/coth/acoth evaluation
+* fix `Re/Im(tanh)` (#20098) (R. Stephan)
+* sin/cos/tan of numeric: reduce mod `2*pi` (#20099) (B. Hackl)
+* exp of numeric: reduce mod `2*pi*I` (#20099) (B. Hackl)
+* performance: speed up sin/cos/tan/coth/acoth evaluation (R. Stephan, A. Thakkar)
 
 https://github.com/pynac/pynac/releases/download/pynac-0.6.3/pynac-0.6.3.tar.bz2

[rwst]

New commits:

9db23de	package version / checksum
7785109	coth/acoth BuiltinFunction --> GinacFunction and fixes
2fab819	doctest fixes

[rwst]

Author: Ralf Stephan

[behackl]

comment:3

The interface changes on this ticket are relatively straightforward, and I could easily review this. However, I'm not sure whether I should, as I've contributed to the pynac release. What do you think?

[rwst]

comment:4

In principle I have already had a look at your changes, but I would like to see a third opinion as well.

[rwst]

Changed branch from u/rws/upgrade_to_pynac_0_6_3 to u/rws/20134-1

[rwst]

Changed commit from 2fab819 to f061a28

[rwst]

New commits:

fcb8d95	a42f798 still fails three in expression.pyx
bf73f41	adapt doctest to have a different arcsech() expression
65023a5	Merge branch 'develop' into for-pynac-0.6.3
1de52c3	expand doctest change
075374f	add doctest
6af66d6	add doctests for issue 144
1f61a24	sech/csch changes
f061a28	pynac-0.6.4 pkg version/chksum