Version 1.5.6

• Release file descriptor even when releasing of android muxer fails #274 by @vamshi-dhulipala
• Refactors TransformationJob to handle terminal states in a more determisitic fashion #273 by @vamshi-dhulipala
• Fixes a null pointer crash (Github Issue #269) #271 by @vamshi-dhulipala
• Fixes a crash in demo app due to a null pointer #270 by @vamshi-dhulipala
• Fix potential buffer overflow issue #263 by @Nailik
• Always set TargetFormat value in TrackTransformationInfo object #262 by @vamshi-dhulipala
• Muxers: integrate native muxer with LiTr #253 by @IanDBird
• Upgrade Build Tools / SDK / Kotlin #249 by @IanDBird
• Muxers: Add native muxer implementation #248 by @IanDBird
• Add missing duration target track metadata to decoder output format #247
• Muxers: Clean up old artifacts if build fails #246 by @IanDBird
• Add missing duration target track metadata when adding track to muxer #244
• Muxers: Add native headers required for building (Alt) #243 by @IanDBird
• Implement skeleton of native litr-muxers module #239 by @IanDBird
• Move RecordCamera2Fragment to fragment package #234 by @IanDBird