subfiles v2.2 2020/11/14

Bugfix: incompatibility of subfiles package with tabular environments removed. The incompatibility was introduced with version v2.1.

subfiles v2.1 2020/10/29

• Bugfix: In some situations, the hooks of \begin{document} and \end{document} were triggered when loading a subfile. This occurred
  in particular with packages for handling CJK languages.
• Documentation: Section about cross-referencing added.

subfiles v2.0 2020/09/07

• Compatibility issues with LaTeX2e <2020-10-01> resolved.
• By default, text after \end{document} as well as the preamble of subfiles, when loaded with \subfile, are ignored now. The old behaviour is available via the new package option v1.
• Command \ifSubfilesClassLoaded added and documentation regarding the use of the \bibliography command corrected.
• Issue arising from main file and subfiles having the same name resolved.
• Problem with the search path for images resolved.

subfiles v1.6 2020/02/14

• Support for sub-bibliographies with package bibunits dropped, in fa-
  vor of \subfix.
• Command \subfix added.
• Incompatibility with standalone class removed.
• The options of the main class are now also processed when typesetting
  a subfile; before they were ignored.

subfiles v1.5 2019/10/30

• Command \subfileinclude added
• Basic support for bibliographies in subfiles added.
• Support for sub-bibliographies with package bibunits added.

subfiles v1.4 2019/10/25

• Incompatibility with comment class removed.
• Bug "\unskip cannot be used in vertical mode" removed (introduced in v1.3).

subfiles v1.3 2019/09/28

• Use of import package to handle directory hierarchies.
• \ignorespaces added to avoid spurious spaces.
• Incompatibility with commands removed that expect \document to be equal to \@onlypreamble after the preamble.

subfiles v1.2 2018/07/31

The subfiles package is now compatible with classes and packages that modify the \document command, like the class revtex4.

subfiles v1.1 2012/05/23

First public release