Merge pull request #157 from Discngine/issue-151

issue-151 fix of chain reading atoms in read_mmcif & descriptor outpu…

Merge pull request #147 from pegerto/m1_modfile

compile M1/M2 chip molfile plugin

Merge pull request #144 from Discngine/ms-4.2

Bug fixes for 4.2 release

Merge pull request #136 from Discngine/PeyratG-patch-1

fix coordinates writing in cif pockets

Merge pull request #133 from Discngine/issue-129

issue-129 correcting behaviour from pdb to mmcif

Merge pull request #132 from Discngine/issue-129

issue-129 adding insertion codes and splitting auth chain & residue n…

Merge pull request #128 from Discngine/issue-127

fixing mmcif writing for db mode

Merge pull request #121 from Discngine/issue-119

Issue 119

Merge pull request #86 from jordansafer/master

Fix header typo for easier parsing

Explicit pockets with various alternates handling