build: bump to v1.8.7

Signed-off-by: Eduardo Silva <eduardo@chronosphere.io>

build: bump to v1.8.6

Signed-off-by: Eduardo Silva <eduardo@chronosphere.io>

build: bump to v1.8.5

Signed-off-by: Eduardo Silva <eduardo@chronosphere.io>

build: bump to v1.8.4

Signed-off-by: Eduardo Silva <eduardo@calyptia.com>

build: bump to v1.8.3 and requires CMake v3.20

Signed-off-by: Eduardo Silva <eduardo@calyptia.com>

build: bump to v1.8.2

Signed-off-by: Eduardo Silva <eduardo@calyptia.com>

server: http: cleanup

Signed-off-by: Eduardo Silva <eduardo@calyptia.com>

core: event: Fix typo in mk_event_select.c. (#410)

Signed-off-by: Igor Peshansky <igorp@google.com>

headers: fix license on old files

Signed-off-by: Eduardo Silva <eduardo@calyptia.com>

build: fix ninja build (#407)

CMake Error:
Running

'/usr/bin/ninja' '-C' '/home/thode/external/cfl/CMakeFiles/CMakeTmp' '-t' 'recompact'

failed with:

ninja: error: build.ninja:50: bad $-escape (literal $ must be written as $$)

Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>