Unittests: remove serialization argument

Updated list of forbidden variables and functions

Cast unsigned int to int as int is less than 3641144. Minor fixes.

Correct use of CACHE_EXSTRP

Input limit raised to 3 641 144 characters

Fixed intersystems-community#15

Typo fix

Merge branch 'master' of https://github.com/intersystems-ru/PythonAda…

…pter

Removed SHOWCASE004.cls.xml

Do not fail if requested variable does not exist

Fixed intersystems-community#1 intersystems-community#6

Search for callout library in bin directory if custom location is uns…

…pecified