Draft release notes for v4.1.2

[ctb]

git log --oneline v4.1.1..latest

4.1.2 release notes

This is a bug-fix and performance release of sourmash.

There are no major new features.

Minor new features:

• add query info to gather CSV output ([MRG] add query info to gather CSV output #1565)

Bug fixes and performance improvements:

• Improved MinHash.remove_many(...) performance by five orders of magnitude ([MRG] Improving MinHash.remove_many(...) performance #1571)
• Fix SBT index saving bug that arbitrarily replaced names (but not content) of identical signatures in .sbt.zip files ([MRG] Fix SBT duplicates bug #1568)
• Empty zipfiles should not cause AssertionError ([MRG] empty zipfile collections should not raise assertion errors when loaded  #1546)

Major refactoring and new internal functionality:

• update MinHash.set_abundances to remove hash if 0 abund; handle negative abundances ([MRG] Update MinHash.set_abundances to remove hash if 0 abund; handle negative abundances. #1575)

Refactoring and cleanup:

• Fix tests that fail to close files that they open ([MRG] Fixing tests that fail to close files that they open #1550)
• Add "&" and " | " as alternate syntax for MinHash intersection merge ([MRG] Add "&" and " | " option to Minhash intersection and Minhash merge #1533)
• Fix missing bracket in docs (Fix missing bracket in docs (cosmetic) #1566)
• Updates for coverage tracking ([MRG] Updates for coverage tracking #1558)
• Provide a .copy() method for both SourmashSignature() and MinHash ([MRG] Provide a .copy() method for both SourmashSignature() and MinHash #1551, [MRG] remove copy.copy(...) from code base for MinHash and SourmashSignature objects #1570)

[ctb]

also -

• update docs with references to new GTDB databases, let GTDB folk know