Changes for 7.0.0alpha1

[ZBXNEXT-8330] updated with support for defaults (esneiders)
[ZBX-22797] fixed client connection memory leak (esneiders)
[ZBX-22373] updated go.mod/sum to allow mixing session and key parameter for Zabbix agent 2 items (esneiders)
[ZBX-21886] added support for compiling under windows with official file properties (MVekslers)

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Changes for 6.4.0beta6

[ZBXNEXT-826] switched to Zabbix versioning (yurii)
[ZBX-22061] fixed custom query read on empty parameter (esneiders)

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Changes for 1.2.1

[ZBX-21206] changed connection to be per database (esneiders)

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Changes for 1.2.0

initial release

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