Add method to trim trailing zeros from IntegerVector

[trevorkarn]

Remove trailing zeroes from integer vectors using .trim

CC: @tscrim @trevorkarn @darijgr

Component: combinatorics

Keywords: gsoc2022 compositions integer-vector

Author: Trevor K. Karn

Branch/Commit: b537651

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/34435

[trevorkarn]

Commit: 12f7909

[trevorkarn]

Last 10 new commits:

e973f7d	Assertion -> ValueError
a57b2d0	Add tests and remove Stanley s.f.
28286da	Add methods to interact with polyominos/compositions
75ce24e	Change to list
8c3cb4e	Add type-A algorithm
4a6b2f9	Rewrite to pass to Permutations
9c2a107	Initial commit of KeyPolynomial
5899abf	Fix divided difference
24098b5	Fix expand
12f7909	Add .trim method to compositions

[trevorkarn]

Branch: u/tkarn/trim-34435

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

6c6300b

Add .trim method to compositions

[sagetrac-git]

Changed commit from 12f7909 to 6c6300b

[trevorkarn]

Description changed:

--- 
+++ 
@@ -1 +1 @@
-Remove trailing zeroes from compositions using `.trim`
+Remove trailing zeroes from integer vectors using `.trim`