v0.34.8

Hecke v0.34.8

Diff since v0.34.7

Merged pull requests:

• Improve banner coloring (#1681) (@paemurru)
• fix: don't use polynomial rings over zero rings (#1684) (@thofma)
• fix: group algebras of additive groups with sparse rep (#1685) (@lgoettgens)
• fix misplaced bracket for maps (#1686) (@flyingapfopenguin)
• Fix show method for pseudo-matrices (#1689) (@SirToby25)
• is_empty for pseudo-matrices (#1691) (@SirToby25)
• chore: bump to 0.34.8 (#1692) (@thofma)

Closed issues:

• BigFloat precision issue on nightly (#1687)