Includes Polarised Predictions and Fixes bug at LO

This release accounts for pineappl grids computed with polarised predictions. In addition, it also fixes bugs related to the computation of LO predictions and include various technical improvements.

What's Changed

• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #104
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #106
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #107
• Add a warning when using truncated and ev_op_iterations > 1 by @scarlehoff in #110
• Write down the versions for both eko and pineko by @scarlehoff in #109
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #111
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #112
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #113
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #114
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #115
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #116
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #118
• Rotate the eko back to save disk space by @andreab1997 in #117
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #120
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #126
• Bump pineappl dependency to fix LO bug by @scarlehoff in #125
• Move regression test by @felixhekhorn in #127
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #129
• Polarized opcards by @giacomomagni in #128

Full Changelog: v0.4.1...v0.4.2