Skipping empty font tables
add 'contains' for the classList implementation
Fix word spacing in Type 0 fonts

Fix word spacing in Type 0 font

correct word spacing

correct word spacing in type 0 font

fix word spacing
Merge pull request #3877 from yurydelendik/issue1171

Skipping empty font tables
Merge pull request #3890 from sriram-dev/3205-word-spacing

correct word spacing
Fixes cvt table length; removes cvt when hints invalid
Merge pull request #3888 from coolwanglu/master

Add 'contains' for the classList implementation
Merge pull request #3878 from yurydelendik/issue2799

Removes cvt when hints invalid