Fix the following build failure on gcc 4.8 which is raised since version
2.0.0 and
9084152:

vendor/hiredis/read.c: In function 'redisReaderFree':
vendor/hiredis/read.c:646:9: error: 'for' loop initial declarations are only allowed in C99 mode
         for (int i = 0; i < r->tasks; i++) {
         ^
vendor/hiredis/read.c:646:9: note: use option -std=c99 or -std=gnu99 to compile your code

This build failure is raised because hiredis source code is built
without C99:
redis/hiredis@13a35bd

Fixes:
 - http://autobuild.buildroot.org/results/04cbcddf6d83ebad8c98400754f9445375e9e489

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Closes #116

Add support for Python 3.10

This fixes the following warning:

setup.py:7: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

This fixes the following warning:

setuptools/dist.py:697: UserWarning: Usage of dash-separated 'description-file' will not be supported in future versions. Please use the underscore name 'description_file' instead

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>

…ilable

RESP3 has native boolean types, to be able to differentiate between
insufficient data in buffer and actual False value add option to
specify custom sentinel returned by gets when not enough data is
available.

CamelCase is used to conform to other arguments naming.

Closes: #114

Closes #134

closes #120
closes #122
closes #124
closes #129
closes #130
closes #121
closes #118

Fixes #141

Fixes #138