v1.13

❗ All users are strongly encouraged to upgrade due to a potential time shifting bug in previous releases

• Fix bug that applied time the unset value of header variable B to the starttime causing time shifts of -12345.0 seconds.
  • Details: when the SAC header variable B (begin time) was unset, specified as a value of -12345.0, this bug caused output data to be shifted backwards in time by 12345 seconds, aka 205.75 minutes, aka 3.429 hours.
• Update libmseed to 2.19.6.
• Add test to restrict operation to SAC files with header version 6 in order to avoid attempting conversions on files with newer, version 7 header included in SAC version 102.0.

v1.12

• Update libmseed to 2.19.3.
• Remove dependency on ntwin32.mak for Windows nmake makefiles, now building works in plain MSVC development environments.
• Add DEPRECATED notice to Makefile.wat and src/Makefile.wat.
• Update licensing to GNU GPL 3.