Rework bundle mode session management

• mediastreamer2!983 (merged)
• ortp!199 (merged)

assigned to @mickael.turnel

added 1 commit

• 0e2fdebb - Rework bundle mode session management

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added 92 commits

• 0e2fdebb...2f06965a - 91 commits from branch master
• 359b8176 - Rework bundle mode session management

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added 4 commits

• 359b8176...4c7613a4 - 3 commits from branch master
• 211062c6 - Rework bundle mode session management

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added 5 commits

• 211062c6...89a8fd41 - 4 commits from branch master
• c79cc153 - Rework bundle mode session management

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added 7 commits

• c79cc153...d768a27d - 6 commits from branch master
• 0a090fb4 - Rework bundle mode session management

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added 4 commits

• 0a090fb4...75d5a074 - 3 commits from branch master
• aae7a948 - Rework bundle mode session management

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requested review from @smorlat

changed the description

added 3 commits

• aae7a948...fa828dfc - 2 commits from branch master
• cb9a5179 - Rework bundle mode session management

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merged