remove macro definition to the header file
Merge pull request #1653 from ruil2/framerate

remove macro definition to the header file
maintain codec demo
Merge pull request #1654 from syureyi/newest

maintain codec demo
Merge pull request #1655 from sijchen/docx

add release note for preparation of v1.3.0
Avoid a warning about an unused static variable
Make sure the random test bitrate is high enough

This is the same fix as in 47df41 (for the ForceIntraFrame
test) applied to the ForceIntraFrameWithTemporal test.
Merge pull request #1656 from mstorsjo/avoid-warning-unused

Avoid a warning about an unused static variable
Merge pull request #1657 from mstorsjo/clip-bitrate

Make sure the random test bitrate is high enough
update the version header file for 1.3