Nimbus Core 2015 Font Package (Nimbus15)
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This package is intended to provide a set of basic Latin (OT1, T1 and TS1), Greek (LGR) and Cyrillic (OT2, T2A minus eight secondary characters, lesser support for T2B, T2C) based on the Nimbus Core 2015 released by Artifex in October 2015. That core contains the URW++ clones of Courier, Helvetica and Times, licensed under the GNU AGPL (with font exemption) described in the files LICENSE and COPYING that accompany the font files.  Note this license is not compatible with the GPL font licenses.  

The individual fonts in this package, with prefixes zco (Courier, 3 weights), zhv (Helvetica, 2 weights) and ztm (Times, 2 weights), are provided in both otf and pfb format, and of necessity are issued under the same AGPL license with font exception. The font named  zcoN-Regular is a narrow version of zco-Regular, and is much better suited to rendering code than the latter.

The package also contains (La)TeX support files that are Copyright (c) by Michael Sharpe, released under the LaTeX Project Public License. See 
http://www.ctan.org/license/lppl1.3
for the details of that license.
The support files for Latin characters are quite meager compared to those in other Times text packages (no small caps, no old-style figures, no proportional figures), and it is recommended to use these fonts only as a supplement providing Greek and Cyrillic. See the documentation for examples.

Current version 1.014 2021-04-06

Changes in version 1.014
Corrected an entry in T2ANimbusSerif.fd. (Thanks Alexey Kuznetsov.)

Changes in version 1.013
1. Added U+0300 .. U+0303 to zco-{Regular, Oblique, Bold, BoldOblique} and zcoB-{Regular,Oblique}. Fontspec seems to require three of these to be present.
2. Added psili accent to the same fonts, as well as U_1E9E (Capital sharp S) and U+1F48 (Omicronpsili).

Changes in version 1.012
Modified some sty files to prevent warnings due to mweights in use by another package.

Changes in version 1.011
Documentation corrections and additions to allow comparisons of typewriter fonts.

Changes in version 1.01
Minor adjustments to sidebearings.

Michael Sharpe
msharpe@ucsd.edu