Fall Colors edition 2016

• finally squashed bug in gdsio::now
• mxlist.h: conform to C99 (default for GCC 5)
• Update README

Scorching Fall Edition 2106

• improve display methods to more closely conform to other display
  methods in Octave/Matlab (e.g., indent element data).
• remove superfluous ':' in display of reference elements.

Early Fall Edition 2016

• new methods '@gds_structure/refrename.m' and '@gds_library/srename.m'
  to structures from a library together will all references to the structure.
• fix typo in 'Contents.m'
• improve methods that return gds_element properties with error checking.
• add '@gds_element/prop' method that returns user defined element properties.

Labor Day Edition 2016

• fix reading of element properties. Was completely broken.
• make writing of element properties safer by checking if
  'attr' and 'name' fields are present in a property structure during writing.
• fixed a bug in 'gdsio.c::now'.
• 'layerinfo' method for gds_structure objects.
• change display method for gds_element objects to display the number of
  elements in a compound element in brackets after the element type.
  Same style as in structure display method.

Even better Summer Edition 2016

• make 'layerinfo.m' a method of the gds_library class.
• fix spelling error in error message in '@gds_structure/add_element.m'

Improved Summer Edition 2016

• fixed a bug in '@gds_structure/add_ref.m'. Multiple references can be created by passing either a cell array of structure names or a cell array of gds_structure objects to 'add_ref'.

Summer edition 2016

• fix for longstanding bug in low level list handling (Florian Demski).
• in gds_open.c: ftell returns long int, not intmax_t

Spring edition 2016

The following changes have been made:

• fix bug that prevents path width < 1 user unit
• improvements to help text for gds_element.m
• better structure array initialization in 'Basic/funcs/layerinfo.m'
• add missing function to 'Structures/gdsii_zonelens.m'

New Year Edition 2016

- more bug fixing in 'bbox' methods. Path elements are now rendered
  before the bounding box is calculated. There are likely still bugs left
  but 'bbox' is beginning to look useful.
- fixed a regression in Basic/funcs/layerinfo.m (was introduced in version 127). 

2015 Holiday Edition

• fixed numerous bugs in bbox methods. There are bugs
  left for layouts that use array references (aref elements)
• new methods for gds_element sref and aref object for fast retrieval
  element properties
• correct error in help text of the gds_element constructor. The
  reflection in an strans record is applied after the rotation.
• print file name when a library is written with write_gds_library.
• Basic/funcs/layerinfo.m optionally returns a vector with layers that
  contain elements
• use 'parfor' to loop over structures in 'Basic/funcs/adjmatrix.m'.
  This has currently no effect in Octave but can speed up functions
  that require the calculation of the structure hierarcy in MATLAB.
• update 'Basic/Contents.m
• update hash functions with newer version of 'gperf'
• fix help text of 'Basic/funcs/topstruct.m'
• corrected help text of Elements/gdsii_*text.m functions.
• update the format of all m-files: 'return' at the end of
  functions is replaced by 'end', removed ';' at the end
  of function definitions.
• update the display methods for elements, structures, and libraries.
• more informative warnings when units are not defined prior to using
  Boolean set algebra operators on elements.