Prevent stackoverflow caused by recursive deconstruction

Configure WhiteSource Bolt for GitHub

Coverity detected two "Memory - illegal accesses  (OVERRUN)" issues. Resizing the buffer should silence this warning.

closes #1824

Fix for #1647

Add restriction for tuple specialization of to_json

This commit fix the issue #1825
Signed-off-by: Camille Bégué <c.begue@samsung.com>

release: add singleinclude and meson.build to include.zip

appveyor.yml: Add MSVC 16 2019 support

Fix issue #1805

 * Add some restriction on pair partial specialization of to_json
Signed-off-by: Camille Bégué <camille.begue.pro@gmail.com>

Fix some spelling errors - mostly in comments & documentation.

I did not touch the Changelog file and any third party stuff.

additonal -> additional (1)
apppend -> append (2)
constuctor -> constructor (2)
contect -> context (2)
dobulequote -> doublequote (1)
elemnts -> elements (1)
exakt -> exact (2)
exluded -> exclude (1)
explicitely -> explicitly (2)
narcissic -> narcissistic (1)
ocurred -> occurred (1)
occuring -> occurring (2)
preceeds -> preceded (1)
ot -> to (2)
wehther -> whether (2)

Also call out to the guidelines for using pkg-config dependencies first,
and reference it for other build systems as well.

Although the possibility of installing with a pkg-config file is
somewhat hidden away in the meson docs, it's been deemed less invasive
due to not distracting away from cmake. So it will have to do.